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-mediatek/spl.c b/arch/arm/mach-mediatek/spl.c
index 37f1f21..927175c 100644
--- a/arch/arm/mach-mediatek/spl.c
+++ b/arch/arm/mach-mediatek/spl.c
@@ -7,6 +7,7 @@
 #include <clk.h>
 #include <common.h>
 #include <hang.h>
+#include <init.h>
 #include <spl.h>
 
 #include "init.h"