binaryPI: Drop warning on EXT_CONF_SUPPORT

Copy-paste from fam15 code.

Change-Id: Ic52031c57a8b659bff5ca03a66ec2291140d2233
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/30730
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>

src/cpu/amd/pi/00630F01/Kconfig

@@ -23,10 +23,6 @@ config CPU_ADDR_BITS
 	int
 	default 48
 
-config EXT_CONF_SUPPORT
-	bool
-	default n
-
 config CBB
 	hex
 	default 0x0

src/cpu/amd/pi/00660F01/Kconfig

@@ -23,10 +23,6 @@ config CPU_ADDR_BITS
 	int
 	default 48
 
-config EXT_CONF_SUPPORT
-	bool
-	default n
-
 config CBB
 	hex
 	default 0x0

src/northbridge/amd/pi/00630F01/northbridge.c

@@ -44,10 +44,6 @@
 
 #define MAX_NODE_NUMS MAX_NODES
 
-#if IS_ENABLED(CONFIG_EXT_CONF_SUPPORT)
-#error CONFIG_EXT_CONF_SUPPORT == 1 not support anymore!
-#endif
-
 typedef struct dram_base_mask {
 	u32 base; //[47:27] at [28:8]
 	u32 mask; //[47:27] at [28:8] and enable at bit 0

src/northbridge/amd/pi/00660F01/northbridge.c

@@ -42,10 +42,6 @@
 
 #define MAX_NODE_NUMS MAX_NODES
 
-#if IS_ENABLED(CONFIG_EXT_CONF_SUPPORT)
-#error CONFIG_EXT_CONF_SUPPORT == 1 not support anymore!
-#endif
-
 typedef struct dram_base_mask {
 	u32 base; //[47:27] at [28:8]
 	u32 mask; //[47:27] at [28:8] and enable at bit 0