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/lego/ev3/legoev3.c b/board/lego/ev3/legoev3.c
index fa099e9..51b669a 100644
--- a/board/lego/ev3/legoev3.c
+++ b/board/lego/ev3/legoev3.c
@@ -14,6 +14,7 @@
 
 #include <common.h>
 #include <i2c.h>
+#include <init.h>
 #include <spi.h>
 #include <spi_flash.h>
 #include <asm/arch/hardware.h>