soc/amd: use apm_get_apmc() in APMC SMI handler

Instead of open-coding this functionality, call the apm_get_apmc()
helper function.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Iac6b614d900e51d91a0c155116a5edc29775ea99
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79836
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
diff --git a/src/soc/amd/common/block/cpu/smm/smi_apmc.c b/src/soc/amd/common/block/cpu/smm/smi_apmc.c
index 0eab86c..9df6ae3 100644
--- a/src/soc/amd/common/block/cpu/smm/smi_apmc.c
+++ b/src/soc/amd/common/block/cpu/smm/smi_apmc.c
@@ -91,7 +91,7 @@
 
 void fch_apmc_smi_handler(void)
 {
-	const uint8_t cmd = inb(pm_acpi_smi_cmd_port());
+	const uint8_t cmd = apm_get_apmc();
 
 	switch (cmd) {
 	case APM_CNT_ACPI_ENABLE:
diff --git a/src/soc/amd/stoneyridge/smihandler.c b/src/soc/amd/stoneyridge/smihandler.c
index a8521c5..f962fa0 100644
--- a/src/soc/amd/stoneyridge/smihandler.c
+++ b/src/soc/amd/stoneyridge/smihandler.c
@@ -21,7 +21,7 @@
  */
 static void stoneyridge_fch_apmc_smi_handler(void)
 {
-	const uint8_t cmd = inb(pm_acpi_smi_cmd_port());
+	const uint8_t cmd = apm_get_apmc();
 
 	switch (cmd) {
 	case APM_CNT_ACPI_ENABLE: