amd/stoneyridge: Update def_callouts.c to reset using reset.c

Convert functionality to use coreboot-centric functions and defined
values.  This change should have no functional effect.

BUG=b:62241048
TEST=Build Gardenia; Build & boot Kahlee.

Change-Id: I62ae50af05d3ac770560368245c4ae81cf9c4395
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/22440
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/soc/amd/common/def_callouts.c b/src/soc/amd/common/def_callouts.c
index e8d404e..4e42e9e 100644
--- a/src/soc/amd/common/def_callouts.c
+++ b/src/soc/amd/common/def_callouts.c
@@ -18,6 +18,7 @@
 #include <amdlib.h>
 #include <BiosCallOuts.h>
 #include "agesawrapper.h"
+#include <reset.h>
 #include <soc/southbridge.h>
 
 #if ENV_BOOTBLOCK
@@ -100,7 +101,6 @@
 AGESA_STATUS agesa_Reset(UINT32 Func, UINTN Data, VOID *ConfigPtr)
 {
 	AGESA_STATUS Status;
-	UINT8 Value;
 	UINTN ResetType;
 	AMD_CONFIG_PARAMS *StdHeader;
 
@@ -114,11 +114,13 @@
 	 */
 	switch (ResetType) {
 	case WARM_RESET_WHENEVER:
-	case COLD_RESET_WHENEVER:
 	case WARM_RESET_IMMEDIATELY:
+		do_soft_reset();
+		break;
+
+	case COLD_RESET_WHENEVER:
 	case COLD_RESET_IMMEDIATELY:
-		Value = 0x06;
-		LibAmdIoWrite(AccessWidth8, SYS_RESET, &Value, StdHeader);
+		do_hard_reset();
 		break;
 
 	default: