soc/intel/pantherlake: Generate TME keys only if TME is enabled

In order to build for PantherLake with TME disabled, key generation
needs to depend on TME Kconfig.

Change-Id: I0af438e279f422292302387442489bcbc1b1605f
Signed-off-by: Alicja Michalska <alicja.michalska@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/89226
Reviewed-by: Pranava Y N <pranavayn@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>

src/soc/intel/pantherlake/Kconfig

@@ -106,7 +106,7 @@ config SOC_INTEL_PANTHERLAKE_BASE
 	select SOC_QDF_DYNAMIC_READ_PMC
 	select SSE2
 	select SUPPORT_CPU_UCODE_IN_CBFS
-	select TME_KEY_REGENERATION_ON_WARM_BOOT
+	select TME_KEY_REGENERATION_ON_WARM_BOOT if INTEL_TME
 	select TSC_MONOTONIC_TIMER
 	select UDELAY_TSC
 	select UDK_202302_BINDING