common: Drop image.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/common/image.c b/common/image.c
index 20fa4bd..6a24abf 100644
--- a/common/image.c
+++ b/common/image.c
@@ -11,6 +11,7 @@
 #include <bootstage.h>
 #include <cpu_func.h>
 #include <env.h>
+#include <lmb.h>
 #include <malloc.h>
 #include <asm/cache.h>
 #include <u-boot/crc.h>