nb/intel/gm45: Clean up header handling

There's no need to have ACPI guards in `gm45.h`, since the only things
the ASL files require are the base address definitions in `memmap.h`.
Also, remove the southbridge include from `gm45.h` and place it only in
the files that actually require something from it.

Tested with BUILD_TIMELESS=1, Roda RK9 remains identical.

Change-Id: Ica2c5ae9f57595c8577a1bfcc3b57f2c57b3e980
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45452
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/northbridge/intel/gm45/acpi/gm45.asl

@@ -1,7 +1,8 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include "hostbridge.asl"
-#include "../gm45.h"
+#include "../memmap.h"
+#include <southbridge/intel/i82801ix/i82801ix.h>
 #include <southbridge/intel/common/rcba.h>
 
 /* PCI Device Resource Consumption */

src/northbridge/intel/gm45/early_init.c

@@ -2,6 +2,7 @@
 
 #include <stdint.h>
 #include <device/pci_ops.h>
+#include <southbridge/intel/i82801ix/i82801ix.h>
 #include "gm45.h"
 
 void gm45_early_init(void)

src/northbridge/intel/gm45/gm45.h

@@ -3,10 +3,6 @@
 #ifndef __NORTHBRIDGE_INTEL_GM45_GM45_H__
 #define __NORTHBRIDGE_INTEL_GM45_GM45_H__
 
-#include <southbridge/intel/i82801ix/i82801ix.h>
-
-#ifndef __ACPI__
-
 #include <stdint.h>
 
 typedef enum {
@@ -163,8 +159,6 @@ enum {
 	VCO_5333 = 2,
 };
 
-#endif
-
 /* Offsets of read/write training results in CMOS.
    They will be restored upon S3 resumes. */
 #define CMOS_READ_TRAINING	0x80 /* 16 bytes */
@@ -409,8 +403,6 @@ enum {
 
 #define EP_PORTARB(x)	(0x100 + 4 * (x))	/* 256bit */
 
-#ifndef __ACPI__
-
 void gm45_early_init(void);
 void gm45_early_reset(void);
 
@@ -460,5 +452,4 @@ struct acpi_rsdp;
 unsigned long northbridge_write_acpi_tables(const struct device *device, unsigned long start,
 						struct acpi_rsdp *rsdp);
 
-#endif /* !__ACPI__ */
 #endif /* __NORTHBRIDGE_INTEL_GM45_GM45_H__ */

src/northbridge/intel/gm45/pcie.c

@@ -4,6 +4,7 @@
 #include <device/pci_ops.h>
 #include <device/pci_def.h>
 #include <console/console.h>
+#include <southbridge/intel/i82801ix/i82801ix.h>
 
 #include "gm45.h"