soc/amd/cezanne: add GPIO support

This still uses the common GPIO code that supports setting up SMI/SCI
support for the GPIOs in all stages, which will get removed in future
patches, so for now the SoC's gpio.c needs to be included in all stages.

Change-Id: I6c12d1d6c605b7eb063eef62a1f71860f602f8dd
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48565
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/amd/cezanne/Kconfig b/src/soc/amd/cezanne/Kconfig
index a51dc44..cb613e3 100644
--- a/src/soc/amd/cezanne/Kconfig
+++ b/src/soc/amd/cezanne/Kconfig
@@ -18,6 +18,7 @@
 	select RESET_VECTOR_IN_RAM
 	select SOC_AMD_COMMON
 	select SOC_AMD_COMMON_BLOCK_ACPIMMIO
+	select SOC_AMD_COMMON_BLOCK_BANKED_GPIOS
 	select SOC_AMD_COMMON_BLOCK_NONCAR
 	select SOC_AMD_COMMON_BLOCK_PCI_MMCONF
 	select SOC_AMD_COMMON_BLOCK_SMBUS