skylake: Remove "IshEnable"

Remove "IshEnable" from soc_intel_skylake_config since it's not
used anymore.

Enable/disable ISH by checking if ISH device is turned on or not.

Refer to https://review.coreboot.org/#/c/coreboot/+/26485/.

BUG=b:79244403
BRANCH=none
TEST=Built.

Change-Id: I4d2889af118659852431c87cb516fd19b577efc5
Signed-off-by: li feng <li1.feng@intel.com>
Reviewed-on: https://review.coreboot.org/26521
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/mainboard/google/chell/devicetree.cb

@@ -42,7 +42,6 @@ chip soc/intel/skylake
 	register "ScsEmmcEnabled" = "1"
 	register "ScsEmmcHs400Enabled" = "1"
 	register "ScsSdCardEnabled" = "0"
-	register "IshEnable" = "0"
 	register "PttSwitch" = "0"
 	register "InternalGfx" = "1"
 	register "SkipExtGfxScan" = "1"

src/mainboard/google/eve/devicetree.cb

@@ -38,7 +38,6 @@ chip soc/intel/skylake
 	register "ScsEmmcEnabled" = "1"
 	register "ScsEmmcHs400Enabled" = "1"
 	register "ScsSdCardEnabled" = "0"
-	register "IshEnable" = "0"
 	register "PttSwitch" = "0"
 	register "InternalGfx" = "1"
 	register "SkipExtGfxScan" = "1"

src/mainboard/google/fizz/devicetree.cb

@@ -73,7 +73,6 @@ chip soc/intel/skylake
 	register "ScsEmmcEnabled" = "0"
 	register "ScsEmmcHs400Enabled" = "0"
 	register "ScsSdCardEnabled" = "2"
-	register "IshEnable" = "0"
 	register "PttSwitch" = "0"
 	register "InternalGfx" = "1"
 	register "SkipExtGfxScan" = "1"

src/mainboard/google/glados/devicetree.cb

@@ -42,7 +42,6 @@ chip soc/intel/skylake
 	register "ScsEmmcEnabled" = "1"
 	register "ScsEmmcHs400Enabled" = "1"
 	register "ScsSdCardEnabled" = "2"
-	register "IshEnable" = "0"
 	register "PttSwitch" = "0"
 	register "InternalGfx" = "1"
 	register "SkipExtGfxScan" = "1"

src/mainboard/google/poppy/variants/baseboard/devicetree.cb

@@ -45,7 +45,6 @@ chip soc/intel/skylake
 	register "ScsEmmcEnabled" = "1"
 	register "ScsEmmcHs400Enabled" = "1"
 	register "ScsSdCardEnabled" = "2"
-	register "IshEnable" = "0"
 	register "PttSwitch" = "0"
 	register "InternalGfx" = "1"
 	register "SkipExtGfxScan" = "1"

src/mainboard/google/poppy/variants/nami/devicetree.cb

@@ -44,7 +44,6 @@ chip soc/intel/skylake
 	register "ScsEmmcEnabled" = "1"
 	register "ScsEmmcHs400Enabled" = "1"
 	register "ScsSdCardEnabled" = "0"
-	register "IshEnable" = "0"
 	register "PttSwitch" = "0"
 	register "InternalGfx" = "1"
 	register "SkipExtGfxScan" = "1"

src/mainboard/google/poppy/variants/nautilus/devicetree.cb

@@ -45,7 +45,6 @@ chip soc/intel/skylake
 	register "ScsEmmcEnabled" = "1"
 	register "ScsEmmcHs400Enabled" = "1"
 	register "ScsSdCardEnabled" = "2"
-	register "IshEnable" = "0"
 	register "PttSwitch" = "0"
 	register "InternalGfx" = "1"
 	register "SkipExtGfxScan" = "1"

src/mainboard/google/poppy/variants/nocturne/devicetree.cb

@@ -45,7 +45,6 @@ chip soc/intel/skylake
 	register "ScsEmmcEnabled" = "1"
 	register "ScsEmmcHs400Enabled" = "1"
 	register "ScsSdCardEnabled" = "0"
-	register "IshEnable" = "0"
 	register "PttSwitch" = "0"
 	register "InternalGfx" = "1"
 	register "SkipExtGfxScan" = "1"

src/mainboard/google/poppy/variants/soraka/devicetree.cb

@@ -45,7 +45,6 @@ chip soc/intel/skylake
 	register "ScsEmmcEnabled" = "1"
 	register "ScsEmmcHs400Enabled" = "1"
 	register "ScsSdCardEnabled" = "2"
-	register "IshEnable" = "0"
 	register "PttSwitch" = "0"
 	register "InternalGfx" = "1"
 	register "SkipExtGfxScan" = "1"

src/mainboard/purism/librem_skl/variants/librem13v2/devicetree.cb

@@ -56,7 +56,6 @@ chip soc/intel/skylake
 	register "ScsEmmcEnabled" = "0"
 	register "ScsEmmcHs400Enabled" = "0"
 	register "ScsSdCardEnabled" = "0"
-	register "IshEnable" = "0"
 	register "PttSwitch" = "0"
 	register "InternalGfx" = "1"
 	register "SkipExtGfxScan" = "1"

src/mainboard/purism/librem_skl/variants/librem15v3/devicetree.cb

@@ -56,7 +56,6 @@ chip soc/intel/skylake
 	register "ScsEmmcEnabled" = "0"
 	register "ScsEmmcHs400Enabled" = "0"
 	register "ScsSdCardEnabled" = "0"
-	register "IshEnable" = "0"
 	register "PttSwitch" = "0"
 	register "InternalGfx" = "1"
 	register "SkipExtGfxScan" = "1"

src/soc/intel/skylake/chip.h

@@ -287,9 +287,6 @@ struct soc_intel_skylake_config {
 	u8 ScsEmmcHs400Enabled;
 	u8 ScsSdCardEnabled;
 
-	/* Integrated Sensor */
-	u8 IshEnable;
-
 	u8 PttSwitch;
 	u8 HeciTimeouts;
 	u8 HsioMessaging;