kernel-build: Make the build quieter

Suppress all the CC/LD lines, they don't add much value, error
messages should be sufficient to debug any problems.

Change-Id: I3a1607c76883ef1634851137a54a607e01b60a36
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/kernel-build.sh b/kernel-build.sh
index 931449a..d074297 100755
--- a/kernel-build.sh
+++ b/kernel-build.sh
@@ -79,15 +79,15 @@
 ARCH=powerpc CROSS_COMPILE=powerpc64le-linux-gnu- make mrproper
 
 # Build kernel with debug
-ARCH=powerpc CROSS_COMPILE=powerpc64le-linux-gnu- make pseries_le_defconfig
+ARCH=powerpc CROSS_COMPILE=powerpc64le-linux-gnu- make -s pseries_le_defconfig
 echo "CONFIG_DEBUG_INFO=y" >> .config
 ARCH=powerpc CROSS_COMPILE=powerpc64le-linux-gnu- make olddefconfig
 ARCH=powerpc CROSS_COMPILE=powerpc64le-linux-gnu- make -j$(nproc) -s C=2 CF=-D__CHECK_ENDIAN__ 2>&1 | gzip > sparse.log.gz
 pahole vmlinux 2>&1 | gzip > structs.dump.gz
 
 # Build kernel
-ARCH=powerpc CROSS_COMPILE=powerpc64le-linux-gnu- make pseries_le_defconfig
-ARCH=powerpc CROSS_COMPILE=powerpc64le-linux-gnu- make -j$(nproc)
+ARCH=powerpc CROSS_COMPILE=powerpc64le-linux-gnu- make -s pseries_le_defconfig
+ARCH=powerpc CROSS_COMPILE=powerpc64le-linux-gnu- make -s -j$(nproc)
 
 EOF_SCRIPT