imx: fix coding style

Fix checkpatch warning and errors in several i.MX related files.

While at it also address a checkpatch warning at arch/arm/cpu/armv7/mx5/soc.c
regarding the usage of extern in a C file.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
diff --git a/arch/arm/cpu/armv7/mx5/soc.c b/arch/arm/cpu/armv7/mx5/soc.c
index c6106d5..cf12ba8 100644
--- a/arch/arm/cpu/armv7/mx5/soc.c
+++ b/arch/arm/cpu/armv7/mx5/soc.c
@@ -26,6 +26,8 @@
 #include <common.h>
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/clock.h>
+#include <asm/arch/sys_proto.h>
+
 #include <asm/errno.h>
 #include <asm/io.h>
 
@@ -117,14 +119,6 @@
 }
 #endif
 
-/*
- * Initializes on-chip ethernet controllers.
- * to override, implement board_eth_init()
- */
-#if defined(CONFIG_FEC_MXC)
-extern int fecmxc_initialize(bd_t *bis);
-#endif
-
 int cpu_eth_init(bd_t *bis)
 {
 	int rc = -ENODEV;