soc/intel/icelake: Make use of common thermal code for ICL

This patch ports CB:34522 and CB:33147 changes from CNL to ICL.

TEST=Build and boot dragonegg

Change-Id: I0b983005f16fe182e634eac63fef4f6b22197a85
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34649
Reviewed-by: Aamir Bohra <aamir.bohra@intel.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/icelake/Kconfig

@@ -51,6 +51,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SOC_INTEL_COMMON_BLOCK_SA
 	select SOC_INTEL_COMMON_BLOCK_SMM
 	select SOC_INTEL_COMMON_BLOCK_SMM_IO_TRAP
+	select SOC_INTEL_COMMON_BLOCK_THERMAL
 	select SOC_INTEL_COMMON_PCH_BASE
 	select SOC_INTEL_COMMON_RESET
 	select SSE2