{sb,soc}/amd/cmn/acpi/sleepstates.asl: Hook up configs

Commit cbc5d3f34b ("soc/intel: Don't
report _S1 state when unsupported") added the `ACPI_S1_NOT_SUPPORTED`
option and commit 0eb5974def ("acpigen:
Add a runtime method to override exposed _Sx sleep states") added a
mechanism to override the enabled sleep states at runtime. However,
these were only hooked up to Intel sleepstates. so the options would
not have any effect on AMD platforms.

Apply the changes from these two commits to AMD sleepstates so that
both options can be used on AMD platforms as well.

Change-Id: I7d5ef2361e36659ac5c6f54b2c236d48713a07c9
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74959
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/amd/common/acpi/sleepstates.asl

@@ -5,10 +5,20 @@ Name(SSFG, 0x09)
 If (CONFIG(HAVE_ACPI_RESUME)) {
 	SSFG = 0x0D
 }
+
+If (CONFIG(ACPI_S1_NOT_SUPPORTED)) {
+	SSFG &= 0xfe
+}
+
 If (CONFIG(DISABLE_ACPI_HIBERNATE)) {
 	SSFG &= 0xF7
 }
 
+External (\OSFG, IntObj)
+If (CondRefOf(\OSFG)) {
+	SSFG = \OSFG
+}
+
 /* Supported sleep states: */
 Name(\_S0, Package () {0x00, 0x00, 0x00, 0x00} )	/* (S0) - working state */
 

src/southbridge/amd/common/acpi/sleepstates.asl

@@ -6,10 +6,20 @@ Name (SSFG, 0x0D)
 #else
 Name (SSFG, 0x09)
 #endif
+
+If (CONFIG(ACPI_S1_NOT_SUPPORTED)) {
+	SSFG &= 0xfe
+}
+
 If (CONFIG(DISABLE_ACPI_HIBERNATE)) {
 	SSFG &= 0xf7
 }
 
+External (\OSFG, IntObj)
+If (CondRefOf(\OSFG)) {
+	SSFG = \OSFG
+}
+
 /* Supported sleep states: */
 Name(\_S0, Package () {0x00, 0x00, 0x00, 0x00} )	/* (S0) - working state */