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

Remove <common.h> from the remainder of the files under arch/arm and
when needed add missing include files directly.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/cpu/armv7m/systick-timer.c b/arch/arm/cpu/armv7m/systick-timer.c
index c30af4f..d8fa4f0 100644
--- a/arch/arm/cpu/armv7m/systick-timer.c
+++ b/arch/arm/cpu/armv7m/systick-timer.c
@@ -21,7 +21,7 @@
  * using CFG_SYS_HZ_CLOCK.
  */
 
-#include <common.h>
+#include <config.h>
 #include <init.h>
 #include <time.h>
 #include <asm/global_data.h>