soc/intel/tigerlake: Enable GPIO IOSTANDBY configuration

Enable SOC_INTEL_COMMON_BLOCK_GPIO_IOSTANDBY so the pads can be
configured with non-zero IOSSTATE values.

BUG=b:171993054

Signed-off-by: Duncan Laurie <dlaurie@google.com>
Change-Id: I1f895dbdbb71a353a98272db6dc70b54e8e172a3
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47254
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/intel/tigerlake/Kconfig b/src/soc/intel/tigerlake/Kconfig
index e117842..e962e4c 100644
--- a/src/soc/intel/tigerlake/Kconfig
+++ b/src/soc/intel/tigerlake/Kconfig
@@ -48,6 +48,7 @@
 	select SOC_INTEL_COMMON_BLOCK_CPU_MPINIT
 	select SOC_INTEL_COMMON_BLOCK_DTT
 	select SOC_INTEL_COMMON_BLOCK_GPIO_DUAL_ROUTE_SUPPORT
+	select SOC_INTEL_COMMON_BLOCK_GPIO_IOSTANDBY
 	select SOC_INTEL_COMMON_BLOCK_GSPI_VERSION_2
 	select SOC_INTEL_COMMON_BLOCK_HDA
 	select SOC_INTEL_COMMON_BLOCK_PCIE_RTD3