soc/intel/tigerlake: Move pmc_soc_set_afterg3_en to pmutil

pmc.c was included in the SMM object, but only needed the one function,
pmc_soc_set_afterg3_en. pmutil.c was already doing power management-
related functionality, and was included in SMM, so moving
pmc_soc_set_afterg3_en to pmutil.c allows pmc.c to be removed from the
SMM build.

Change-Id: I87f65fd10d35f1f75516e804501d5319b81a0383
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41407
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/tigerlake/Makefile.inc

@@ -47,7 +47,6 @@ ramstage-y += me.c
 
 smm-y += gpio.c
 smm-y += p2sb.c
-smm-y += pmc.c
 smm-y += pmutil.c
 smm-y += smihandler.c
 smm-y += uart.c

src/soc/intel/tigerlake/pmc.c

@@ -17,23 +17,6 @@
 #include <soc/pm.h>
 #include <soc/soc_chip.h>
 
-/*
- * Set which power state system will be after reapplying
- * the power (from G3 State)
- */
-void pmc_soc_set_afterg3_en(const bool on)
-{
-	uint8_t reg8;
-	uint8_t *const pmcbase = pmc_mmio_regs();
-
-	reg8 = read8(pmcbase + GEN_PMCON_A);
-	if (on)
-		reg8 &= ~SLEEP_AFTER_POWER_FAIL;
-	else
-		reg8 |= SLEEP_AFTER_POWER_FAIL;
-	write8(pmcbase + GEN_PMCON_A, reg8);
-}
-
 static void config_deep_sX(uint32_t offset, uint32_t mask, int sx, int enable)
 {
 	uint32_t reg;

src/soc/intel/tigerlake/pmutil.c

@@ -275,3 +275,20 @@ uint16_t get_pmbase(void)
 {
 	return (uint16_t) ACPI_BASE_ADDRESS;
 }
+
+/*
+ * Set which power state system will be after reapplying
+ * the power (from G3 State)
+ */
+void pmc_soc_set_afterg3_en(const bool on)
+{
+	uint8_t reg8;
+	uint8_t *const pmcbase = pmc_mmio_regs();
+
+	reg8 = read8(pmcbase + GEN_PMCON_A);
+	if (on)
+		reg8 &= ~SLEEP_AFTER_POWER_FAIL;
+	else
+		reg8 |= SLEEP_AFTER_POWER_FAIL;
+	write8(pmcbase + GEN_PMCON_A, reg8);
+}