nb/intel/gm45: Use LAPIC udelay instead of custom version

This change may slow down the raminit by maximum 200usec,
but reuses the lapic udelay definition.

Change-Id: I60a68f8a7911b257c0eecda96f7c5bf302bb51ed
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/17152
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/northbridge/intel/gm45/raminit.c b/src/northbridge/intel/gm45/raminit.c
index 37b44cc..167ef24 100644
--- a/src/northbridge/intel/gm45/raminit.c
+++ b/src/northbridge/intel/gm45/raminit.c
@@ -24,7 +24,7 @@
 #include <spd.h>
 #include <console/console.h>
 #include <lib.h>
-#include "delay.h"
+#include <delay.h>
 #include "gm45.h"
 #include "chip.h"
 
@@ -916,15 +916,15 @@
 
 static void dram_powerup(const int resume)
 {
-	udelay_from_reset(200);
+	udelay(200);
 	MCHBAR32(CLKCFG_MCHBAR) = (MCHBAR32(CLKCFG_MCHBAR) & ~(1 << 3)) | (3 << 21);
 	if (!resume) {
 		MCHBAR32(0x1434) |= (1 << 10);
-		ns100delay(2);
+		udelay(1);
 	}
 	MCHBAR32(0x1434) |= (1 << 6);
 	if (!resume) {
-		ns100delay(1);
+		udelay(1);
 		MCHBAR32(0x1434) |= (1 << 9);
 		MCHBAR32(0x1434) &= ~(1 << 10);
 		udelay(500);