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/LaCie/netspace_v2/netspace_v2.c b/board/LaCie/netspace_v2/netspace_v2.c
index b7ae58c..f9bf527 100644
--- a/board/LaCie/netspace_v2/netspace_v2.c
+++ b/board/LaCie/netspace_v2/netspace_v2.c
@@ -11,6 +11,7 @@
 #include <common.h>
 #include <command.h>
 #include <env.h>
+#include <init.h>
 #include <net.h>
 #include <asm/mach-types.h>
 #include <asm/arch/cpu.h>