soc/intel/common/thermal: Hook up IA thermal block to romstage

This patch ensures IA common thermal block is now able to compile
under romstage with necessary compilation issues fixed.

BUG=b:193774296

Change-Id: I3279f55436977ab9a47e04455d8469e50b5c33c8
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59391
Reviewed-by:  Felix Singer <felixsinger@posteo.net>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/common/block/thermal/Makefile.inc

@@ -1 +1,2 @@
+romstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_THERMAL) += thermal.c
 ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_THERMAL) += thermal.c

src/soc/intel/common/block/thermal/thermal.c

@@ -43,7 +43,7 @@ void pch_thermal_configuration(void)
 	uint16_t reg16;
 	uintptr_t thermalbar;
 	uintptr_t thermalbar_pm;
-	struct device *dev;
+	const struct device *dev;
 	struct resource *res;
 
 	dev = pcidev_path_on_root(PCH_DEVFN_THERMAL);