Fix error message for VbGbbReadBmpHeader

BUG=none
BRANCH=tot
TEST=Tested on Jerry

Change-Id: I1ecfd28b4c694e4aa531ed0e77219b2160509bd0
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/313744
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/firmware/lib/region-kernel.c b/firmware/lib/region-kernel.c
index 84d474d..e630397 100644
--- a/firmware/lib/region-kernel.c
+++ b/firmware/lib/region-kernel.c
@@ -50,7 +50,7 @@
 		(hdr->major_version > BMPBLOCK_MAJOR_VERSION) ||
 		((hdr->major_version == BMPBLOCK_MAJOR_VERSION) &&
 		(hdr->minor_version > BMPBLOCK_MINOR_VERSION))) {
-			VBDEBUG(("VbDisplayScreenFromGBB(): "
+			VBDEBUG(("VbGbbReadBmpHeader(): "
 				"invalid/too new bitmap header\n"));
 			VbExFree(hdr);
 			return VBERROR_INVALID_BMPFV;