soc/amd/stoneyridge: Relocate acpi_get_sleep_type()

Move the function into common code.  Convert it to use the memory-
mapped access type.  Convert vboot_platform_is_resuming() to call it
instead of duplicating the source.

BUG=b:131682806

Change-Id: I245bebb8dc2d331cdd56acfb245a004536b792ab
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32658
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/amd/common/block/acpi/acpi.c

@@ -132,13 +132,17 @@ void acpi_clear_pm1_status(void)
 	print_pm1_status(pm1_sts);
 }
 
+int acpi_get_sleep_type(void)
+{
+	return acpi_sleep_from_pm1(acpi_read16(MMIO_ACPI_PM1_CNT_BLK));
+}
+
 int vboot_platform_is_resuming(void)
 {
 	if (!(acpi_read16(MMIO_ACPI_PM1_STS) & WAK_STS))
 		return 0;
 
-	uint16_t pm_cnt = acpi_read16(MMIO_ACPI_PM1_CNT_BLK);
+	return acpi_get_sleep_type() == ACPI_S3;
-	return acpi_sleep_from_pm1(pm_cnt) == ACPI_S3;
 }
 
 /* If a system reset is about to be requested, modify the PM1 register so it

src/soc/amd/stoneyridge/sb_util.c

@@ -29,11 +29,6 @@ uint16_t pm_acpi_pm_evt_blk(void)
 	return pm_read16(PM_EVT_BLK);
 }
 
-int acpi_get_sleep_type(void)
-{
-	return acpi_sleep_from_pm1(inw(pm_acpi_pm_cnt_blk()));
-}
-
 void save_uma_size(uint32_t size)
 {
 	biosram_write32(BIOSRAM_UMA_SIZE, size);