board: gateworks: venice: display DTB used

Display the DTB file used for U-Boot.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
diff --git a/board/gateworks/venice/imx8mm_venice.c b/board/gateworks/venice/imx8mm_venice.c
index 1d51b6e..cb00f53 100644
--- a/board/gateworks/venice/imx8mm_venice.c
+++ b/board/gateworks/venice/imx8mm_venice.c
@@ -42,12 +42,16 @@
 {
 	int i  = 0;
 	const char *dtb;
+	static char init;
 	char buf[32];
 
 	do {
 		dtb = gsc_get_dtb_name(i++, buf, sizeof(buf));
-		if (!strcmp(dtb, name))
+		if (!strcmp(dtb, name)) {
+			if (!init++)
+				printf("DTB     : %s\n", name);
 			return 0;
+		}
 	} while (dtb);
 
 	return -1;