mb/google/corsola: Add VPROC12/VSRAM_PROC12 to regulator interface

Add VPROC12/VSRAM_PROC12 to adjust power for raising little
CPU frequency.

TEST=build pass
BUG=b:202871018

Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: I59b4627220022a51a116716036a8ba0048039508
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59568
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>

src/mainboard/google/corsola/regulator.c

@@ -18,6 +18,8 @@ static const int regulator_id[] = {
 	[MTK_REGULATOR_VDRAM1] = MT6366_VDRAM1,
 	[MTK_REGULATOR_VMCH] = MT6366_VMCH,
 	[MTK_REGULATOR_VMC] = MT6366_VMC,
+	[MTK_REGULATOR_VPROC12] = MT6366_VPROC12,
+	[MTK_REGULATOR_VSRAM_PROC12] = MT6366_VSRAM_PROC12,
 };
 
 _Static_assert(ARRAY_SIZE(regulator_id) == MTK_REGULATOR_NUM, "regulator_id size error");

src/soc/mediatek/common/include/soc/regulator.h

@@ -16,6 +16,8 @@ enum mtk_regulator {
 	MTK_REGULATOR_VDRAM1,
 	MTK_REGULATOR_VMCH,
 	MTK_REGULATOR_VMC,
+	MTK_REGULATOR_VPROC12,
+	MTK_REGULATOR_VSRAM_PROC12,
 	MTK_REGULATOR_NUM,
 };