x86: apl: Correct usage of IS_ENABLED() macro in acpi-pmc-uclass.c

This file was using IS_ENABLED() to test for CONFIG flags but omitted
the CONFIG_ prefix and so did not work as expected.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/power/acpi_pmc/acpi-pmc-uclass.c b/drivers/power/acpi_pmc/acpi-pmc-uclass.c
index 1e94104..4048840 100644
--- a/drivers/power/acpi_pmc/acpi-pmc-uclass.c
+++ b/drivers/power/acpi_pmc/acpi-pmc-uclass.c
@@ -141,7 +141,7 @@
 	if (upriv->pm1_sts & WAK_STS) {
 		switch (acpi_sleep_from_pm1(upriv->pm1_cnt)) {
 		case ACPI_S3:
-			if (IS_ENABLED(HAVE_ACPI_RESUME))
+			if (IS_ENABLED(CONFIG_HAVE_ACPI_RESUME))
 				prev_sleep_state = ACPI_S3;
 			break;
 		case ACPI_S5: