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/registers/mchbar.h b/src/northbridge/intel/haswell/registers/mchbar.h
index 2dfad62..5610e70 100644
--- a/src/northbridge/intel/haswell/registers/mchbar.h
+++ b/src/northbridge/intel/haswell/registers/mchbar.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
-#ifndef __HASWELL_REGISTERS_MCHBAR_H__
-#define __HASWELL_REGISTERS_MCHBAR_H__
+#ifndef HASWELL_REGISTERS_MCHBAR_H
+#define HASWELL_REGISTERS_MCHBAR_H
 
 /* Memory controller characteristics */
 #define NUM_CHANNELS	2
@@ -74,4 +74,4 @@
 #define CRDTLCK			0x77fc
 #define MCARBLCK		0x7ffc
 
-#endif /* __HASWELL_REGISTERS_MCHBAR_H__ */
+#endif /* HASWELL_REGISTERS_MCHBAR_H */