mb/google/brya: move MILLIWATTS_TO_WATTS macro in header file

Move MILLIWATTS_TO_WATTS macro in power_limit header file
so all other files can use the same macro.

BUG=None
BRANCH=None
TEST=Build FW and test on brya0 board

Change-Id: Ic7ecba06b0e0a47546f7307cbfbc3ce0fc634bc3
Signed-off-by: Sumeet Pawnikar <sumeet.r.pawnikar@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57463
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

src/mainboard/google/brya/variants/baseboard/brya/ramstage.c

@@ -9,8 +9,6 @@
 #include <drivers/intel/dptf/chip.h>
 #include <intelblocks/power_limit.h>
 
-#define MILLIWATTS_TO_WATTS	1000
-
 WEAK_DEV_PTR(dptf_policy);
 
 void variant_update_power_limits(const struct cpu_power_limits *limits, size_t num_entries)

src/soc/intel/common/block/include/intelblocks/power_limit.h

@@ -15,6 +15,8 @@
 /* Default power limit value in secs */
 #define MOBILE_SKU_PL1_TIME_SEC		28
 
+#define MILLIWATTS_TO_WATTS		1000
+
 struct soc_power_limits_config {
 	/* PL1 Override value in Watts */
 	uint16_t tdp_pl1_override;