mainboard/amd/crater: Select the option to keep the AMD ACP active in S3

Issue=ACP is not active in S3 state and audio playback doesnt work

Fix=Introduce a config option to control this setting.

TEST=Tested this in ACPI S3 state,by connecting an external CODEC and
transmitting a known pattern to the ACP via the I2S TDM controller RX
lines and ensuring that the sound is output to the speaker connected
to the CODEC via the TDM TX line.

Change-Id: Ifbd3e72a4d018e4a14d9459dd3a6804dd27050e4
Signed-off-by: Anand Vaikar <a.vaikar2021@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/89610
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/amd/crater/Kconfig

@@ -18,6 +18,7 @@ config BOARD_AMD_CRATER_COMMON
 	select SPI_FLASH_EXIT_4_BYTE_ADDR_MODE
 	select SOC_AMD_COMMON_BLOCK_PSP_RPMC
 	select SOC_AMD_COMMON_BLOCK_PSP_SMI
+	select KEEP_ACP_RUNNING_IN_S3
 
 config BOARD_AMD_CRATER_RENOIR
 	select BOARD_AMD_CRATER_COMMON