nb/x4x: Fix sticky scratchpad register offset

Change-Id: I9b952e32dc661f5c1fa96b037b415693d8777b04
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/17685
Tested-by: build bot (Jenkins)
Reviewed-by: Damien Zammit <damien@zamaudio.com>
diff --git a/src/northbridge/intel/x4x/x4x.h b/src/northbridge/intel/x4x/x4x.h
index e4eb8dd..7ca634f 100644
--- a/src/northbridge/intel/x4x/x4x.h
+++ b/src/northbridge/intel/x4x/x4x.h
@@ -97,9 +97,7 @@
 #define CLKCFG_MEMCLK_MASK	(7 << CLKCFG_MEMCLK_SHIFT)
 #define CLKCFG_UPDATE		(1 << 12)
 
-#define SSKPD_MCHBAR		0x0c1c
-#define SSKPD_CLK_SHIFT		0
-#define SSKPD_CLK_MASK		(7 << SSKPD_CLK_SHIFT)
+#define SSKPD_MCHBAR		0x0c20 /* 64 bit */
 
 /*
  * DMIBAR