kbuild: use short logs for some board specific make rules

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: David Updegraff <dave@cray.com>
Cc: Andre Schwarz <andre.schwarz@matrix-vision.de>
diff --git a/board/matrix_vision/mvsmr/Makefile b/board/matrix_vision/mvsmr/Makefile
index 9454259..fae7ec2 100644
--- a/board/matrix_vision/mvsmr/Makefile
+++ b/board/matrix_vision/mvsmr/Makefile
@@ -12,5 +12,11 @@
 
 extra-y := bootscript.img
 
+quiet_cmd_mkimage = UIMAGE  $@
+cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
+        $(if $(KBUILD_VERBOSE:1=), >/dev/null)
+
+MKIMAGEFLAGS_bootscript.image := -T script -C none -n mvSMR_Script
+
 $(obj)/bootscript.img: $(src)/bootscript
-	@mkimage -T script -C none -n mvSMR_Script -d $< $@
+	$(call cmd,mkimage)