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/phytium/durian/durian.c b/board/phytium/durian/durian.c
index 91d13bd..7dceebd 100644
--- a/board/phytium/durian/durian.c
+++ b/board/phytium/durian/durian.c
@@ -7,6 +7,7 @@
 
 #include <common.h>
 #include <cpu_func.h>
+#include <init.h>
 #include <asm/armv8/mmu.h>
 #include <asm/cache.h>
 #include <asm/system.h>