common: Drop init.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/powerpc/cpu/mpc8xxx/fsl_lbc.c b/arch/powerpc/cpu/mpc8xxx/fsl_lbc.c
index afcb75b..29489b4 100644
--- a/arch/powerpc/cpu/mpc8xxx/fsl_lbc.c
+++ b/arch/powerpc/cpu/mpc8xxx/fsl_lbc.c
@@ -5,6 +5,7 @@
 
 #include <common.h>
 #include <hang.h>
+#include <init.h>
 #include <asm/fsl_lbc.h>
 
 #ifdef CONFIG_MPC83xx