soc: arm64: qemu_cortex_a53: fix soc.h usage

<soc.h> has been traditionally been used as a proxy to HAL headers,
register definitions, etc. Nowadays, <soc.h> is anarchy. It serves a
different purpose depending on the SoC. In some cases it includes HALs,
in some others it works as a header sink/proxy (for no good reason), as
a register definition when there's no HAL... To make things worse, it is
being included in code that is, in theory, non-SoC specific.

This patch is part of a series intended to improve the situation by
removing <soc.h> usage when not needed, and by eventually removing it.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>

soc/arm64/qemu_cortex_a53/mmu_regions.c

@@ -4,8 +4,9 @@
  *
  * SPDX-License-Identifier: Apache-2.0
  */
-#include <soc.h>
 #include <zephyr/arch/arm64/arm_mmu.h>
+#include <zephyr/devicetree.h>
+#include <zephyr/sys/util.h>
 
 #define SZ_1K	1024
 

soc/arm64/qemu_cortex_a53/soc.h

@@ -1,19 +0,0 @@
-/*
- * Copyright (c) 2019 Carlo Caione <ccaione@baylibre.com>
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- */
-
-#ifndef _SOC_H_
-#define _SOC_H_
-
-#include <zephyr/sys/util.h>
-
-#ifndef _ASMLANGUAGE
-
-#include <zephyr/device.h>
-
-#endif /* !_ASMLANGUAGE */
-
-#endif /* _SOC_H_ */