nb/intel/haswell: Uniformize include guards

Remove leading and trailing underscores and change `RAMINIT_H` to be
more consistent with other headers.

Tested with BUILD_TIMELESS=1, Asrock B85M Pro4 remains identical.

Change-Id: Ie20fcaa0f9393eb0a34054eda53b9bade63cc0d2
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51890
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/northbridge/intel/haswell/raminit.h b/src/northbridge/intel/haswell/raminit.h
index 5483229..e151b46 100644
--- a/src/northbridge/intel/haswell/raminit.h
+++ b/src/northbridge/intel/haswell/raminit.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
-#ifndef RAMINIT_H
-#define RAMINIT_H
+#ifndef NORTHBRIDGE_INTEL_HASWELL_RAMINIT_H
+#define NORTHBRIDGE_INTEL_HASWELL_RAMINIT_H
 
 #include <types.h>
 
@@ -17,4 +17,4 @@
 
 void perform_raminit(const int s3resume);
 
-#endif				/* RAMINIT_H */
+#endif	/* NORTHBRIDGE_INTEL_HASWELL_RAMINIT_H */