soc/amd/stoneyridge/Kconfig: select SOC_AMD_COMMON_BLOCK_SVI2

Stoneyridge uses the serial voltage ID 2 standard to tell the VRM on the
board which voltage it wants, so select the SOC_AMD_COMMON_BLOCK_SVI2
Kconfig option to have the corresponding code to decode the raw SVI2
value into a voltage.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I7d7031d9ad997a86c18d0e9e7af9a88ddf2d873c
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73999
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>

src/soc/amd/stoneyridge/Kconfig

@@ -39,6 +39,7 @@ config SOC_AMD_STONEYRIDGE
 	select SOC_AMD_COMMON_BLOCK_SMI
 	select SOC_AMD_COMMON_BLOCK_SMM
 	select SOC_AMD_COMMON_BLOCK_SPI
+	select SOC_AMD_COMMON_BLOCK_SVI2
 	select SOC_AMD_COMMON_BLOCK_UART
 	select SSE2
 	select TSC_SYNC_LFENCE