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/spl/spl_opensbi.c b/common/spl/spl_opensbi.c
index 3519c34..e88136e 100644
--- a/common/spl/spl_opensbi.c
+++ b/common/spl/spl_opensbi.c
@@ -9,9 +9,11 @@
 #include <cpu_func.h>
 #include <errno.h>
 #include <hang.h>
+#include <image.h>
 #include <spl.h>
 #include <asm/smp.h>
 #include <opensbi.h>
+#include <linux/libfdt.h>
 
 DECLARE_GLOBAL_DATA_PTR;