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

Remove <common.h> from all powerpc architecture files and when needed add
missing include files directly. This typically involves using
<asm/u-boot.h> instead due to the difficult nested structure of the
PowerPC includes themselves.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init_early.c b/arch/powerpc/cpu/mpc85xx/cpu_init_early.c
index a67f37e..574510f 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu_init_early.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu_init_early.c
@@ -3,8 +3,9 @@
  * Copyright 2009-2012 Freescale Semiconductor, Inc
  */
 
-#include <common.h>
+#include <asm/ppc.h>
 #include <system-constants.h>
+#include <linux/types.h>
 #include <asm-offsets.h>
 #include <asm/global_data.h>
 #include <asm/processor.h>