util: add common ARRAY_SIZE define

I want to use this in more places, so put it in util.h rather than
copying & pasting it into another file.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 0 insertions, 1 deletions

diff --git a/dtc.h b/dtc.h
index 3e42a07..264a20c 100644
--- a/dtc.h
+++ b/dtc.h
@@ -66,7 +66,6 @@ typedef uint32_t cell_t;
 #define strneq(a, b, n)	(strncmp((a), (b), (n)) == 0)
 
 #define ALIGN(x, a)	(((x) + (a) - 1) & ~((a) - 1))
-#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 
 /* Data blobs */
 enum markertype {