mkimage: Move ARRAY_SIZE to header file

Move this definition from aisimage.c to mkimage.h so that it is available
more widely.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Marek Vasut <marex@denx.de>

tools/aisimage.c

@@ -32,7 +32,6 @@
 #define WORD_ALIGN0	4
 #define WORD_ALIGN(len) (((len)+WORD_ALIGN0-1) & ~(WORD_ALIGN0-1))
 #define MAX_CMD_BUFFER	4096
-#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
 
 static uint32_t ais_img_size;
 

tools/mkimage.h

@@ -42,6 +42,8 @@
 #define debug(fmt,args...)
 #endif /* MKIMAGE_DEBUG */
 
+#define ARRAY_SIZE(x)		(sizeof(x) / sizeof((x)[0]))
+
 #define MKIMAGE_TMPFILE_SUFFIX		".tmp"
 #define MKIMAGE_MAX_TMPFILE_LEN		256
 #define MKIMAGE_DEFAULT_DTC_OPTIONS	"-I dts -O dtb -p 500"