arm: Don't include common.h in header files

It is bad practice to include common.h in other header files since it can
bring in any number of superfluous definitions. It implies that some C
files don't include it and thus may be missing CONFIG options that are set
up by that file. The C files should include these themselves.

Update some header files in arch/arm to drop this.

Signed-off-by: Simon Glass <sjg@chromium.org>

board/compulab/cm_t54/mux.c

@@ -10,6 +10,7 @@
 #ifndef _CM_T54_MUX_DATA_H
 #define _CM_T54_MUX_DATA_H
 
+#include <common.h>
 #include <asm/arch/mux_omap5.h>
 #include <asm/arch/sys_proto.h>
 

board/el/el6x/el6x.c

@@ -5,6 +5,7 @@
  * Based on other i.MX6 boards
  */
 
+#include <common.h>
 #include <init.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/imx-regs.h>

board/embest/mx6boards/mx6boards.c

@@ -12,6 +12,7 @@
  * Copyright (C) 2013 Jon Nettleton <jon.nettleton@gmail.com>.
  */
 
+#include <common.h>
 #include <init.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/sys_proto.h>

board/gateworks/gw_ventana/common.c

@@ -5,6 +5,7 @@
  * Author: Tim Harvey <tharvey@gateworks.com>
  */
 
+#include <common.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/mx6-pins.h>
 #include <asm/arch/sys_proto.h>

board/grinn/liteboard/board.c

@@ -4,6 +4,7 @@
  * Copyright (C) 2016 Grinn
  */
 
+#include <common.h>
 #include <command.h>
 #include <init.h>
 #include <asm/arch/clock.h>

board/overo/spl.c

@@ -11,6 +11,8 @@
  * (C) Copyright 2004-2008
  * Texas Instruments, <www.ti.com>
  */
+
+#include <common.h>
 #include <asm/io.h>
 #include <asm/arch/mem.h>
 #include <asm/arch/sys_proto.h>

board/sks-kinkel/sksimx6/sksimx6.c

@@ -3,6 +3,7 @@
  * Copyright (C) 2016 Stefano Babic <sbabic@denx.de>
  */
 
+#include <common.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/iomux.h>

board/solidrun/mx6cuboxi/mx6cuboxi.c

@@ -13,6 +13,7 @@
  * Ported to SolidRun microSOM by Rabeeh Khoury <rabeeh@solid-run.com>
  */
 
+#include <common.h>
 #include <init.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/imx-regs.h>

board/technexion/pico-imx6/spl.c

@@ -6,6 +6,7 @@
  *	   Fabio Estevam <festevam@gmail.com>
  */
 
+#include <common.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/iomux.h>

board/technexion/pico-imx7d/spl.c

@@ -5,6 +5,7 @@
  * Author: Richard Hu <richard.hu@technexion.com>
  */
 
+#include <common.h>
 #include <cpu_func.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/imx-regs.h>

board/udoo/udoo_spl.c

@@ -6,6 +6,7 @@
  * Based on board/wandboard/spl.c
  */
 
+#include <common.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/iomux.h>

board/wandboard/spl.c

@@ -5,6 +5,7 @@
  *         Richard Hu <hakahu@gmail.com>
  */
 
+#include <common.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/iomux.h>

board/wandboard/wandboard.c

@@ -6,6 +6,7 @@
  * Author: Fabio Estevam <fabio.estevam@freescale.com>
  */
 
+#include <common.h>
 #include <init.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/crm_regs.h>