[PATCH] Kbuild: shut up uboot mkimage output when building quietly

[Arnd Bergmann]

From: Arnd Bergmann <arnd@xxxxxxxx>

When building with 'make -s', most architectures produce no output
at all unless there are warnings. However, on at leat mips and nios2
there is output from /usr/bin/mkimage when that is installed:

  Image Name:   Linux-5.12.0-next-20210427-00716
  Created:      Wed Apr 28 22:03:30 2021
  Image Type:   NIOS II Linux Kernel Image (gzip compressed)
  Data Size:    2245876 Bytes = 2193.24 KiB = 2.14 MiB
  Load Address: d0000000
  Entry Point:  d0000000

Make these behave like the others and check for the '${quiet}'
variable to see if we should redirect the output to /dev/null.
Any errors and warnings from mkimage will still be seen as those
get sent to stderr.

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
 scripts/mkuboot.sh | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/scripts/mkuboot.sh b/scripts/mkuboot.sh
index 4b1fe09e9042..031b5d6b839f 100755
--- a/scripts/mkuboot.sh
+++ b/scripts/mkuboot.sh
@@ -17,4 +17,8 @@ if [ -z "${MKIMAGE}" ]; then
 fi
 
 # Call "mkimage" to create U-Boot image
-${MKIMAGE} "$@"
+if [ "${quiet}" != "silent_" ]; then
+${MKIMAGE} "$@" ${REDIRECT}
+else
+${MKIMAGE} "$@" ${REDIRECT} > /dev/null
+fi
-- 
2.29.2