soc/intel/{common,tgl,adl}: guard TME Kconfig option by SoC support

Currently, Intel TME (Total Memory Encryption) can be enabled regardless
of SoC support. Add a Kconfig to guard the option depending on actual
support.

Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Change-Id: Ia20152bb0fc56b0aec3019c592dd6d484829aefe
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57762
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/src/soc/intel/alderlake/Kconfig b/src/soc/intel/alderlake/Kconfig
index 915dd3f..b87861b 100644
--- a/src/soc/intel/alderlake/Kconfig
+++ b/src/soc/intel/alderlake/Kconfig
@@ -18,6 +18,7 @@
 	select CACHE_MRC_SETTINGS
 	select CPU_INTEL_COMMON
 	select CPU_INTEL_FIRMWARE_INTERFACE_TABLE
+	select CPU_SUPPORTS_INTEL_TME
 	select CPU_SUPPORTS_PM_TIMER_EMULATION
 	select DRIVERS_USB_ACPI
 	select FSP_COMPRESS_FSP_S_LZ4