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/epbar.h b/src/northbridge/intel/haswell/registers/epbar.h
index 699a2ba..cccfcca 100644
--- a/src/northbridge/intel/haswell/registers/epbar.h
+++ b/src/northbridge/intel/haswell/registers/epbar.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
-#ifndef __HASWELL_REGISTERS_EPBAR_H__
-#define __HASWELL_REGISTERS_EPBAR_H__
+#ifndef HASWELL_REGISTERS_EPBAR_H
+#define HASWELL_REGISTERS_EPBAR_H
 
 #define EPPVCCAP1	0x004	/* 32bit */
 #define EPPVCCAP2	0x008	/* 32bit */
@@ -25,4 +25,4 @@
 #define EPLE4D		0x080	/* 32bit */
 #define EPLE4A		0x088	/* 64bit */
 
-#endif /* __HASWELL_REGISTERS_EPBAR_H__ */
+#endif /* HASWELL_REGISTERS_EPBAR_H */