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/arm/mach-k3/common.c b/arch/arm/mach-k3/common.c
index af1020b..53cad78 100644
--- a/arch/arm/mach-k3/common.c
+++ b/arch/arm/mach-k3/common.c
@@ -9,6 +9,7 @@
 #include <common.h>
 #include <cpu_func.h>
 #include <image.h>
+#include <init.h>
 #include <spl.h>
 #include "common.h"
 #include <dm.h>