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/board/sandisk/sansa_fuze_plus/sfp.c b/board/sandisk/sansa_fuze_plus/sfp.c
index c2c9b9c..ae965a8 100644
--- a/board/sandisk/sansa_fuze_plus/sfp.c
+++ b/board/sandisk/sansa_fuze_plus/sfp.c
@@ -11,6 +11,7 @@
 
 #include <common.h>
 #include <errno.h>
+#include <init.h>
 #include <net.h>
 #include <asm/gpio.h>
 #include <asm/io.h>