arm: omap2: Remove <common.h> and add needed includes

Remove <common.h> from all mach-omap2 files and when needed add
missing include files directly.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/mach-omap2/fdt-common.c b/arch/arm/mach-omap2/fdt-common.c
index e90d577..c6b4c03 100644
--- a/arch/arm/mach-omap2/fdt-common.c
+++ b/arch/arm/mach-omap2/fdt-common.c
@@ -3,7 +3,7 @@
  * Copyright 2016-2017 Texas Instruments, Inc.
  */
 
-#include <common.h>
+#include <config.h>
 #include <log.h>
 #include <linux/libfdt.h>
 #include <fdt_support.h>