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>
1 file changed