mwl8787: print the command id that failed

Signed-off-by: Bob Copeland <me@bobcopeland.com>
mwl8787: set the mac address on ifup

This currently doesn't work because the firmware says the
command failed.  As long as you don't change it from permaddr,
the network still works, though.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Merge branch 'ft-sd8787-driver' of github.com:cozybit/open80211s into sd8787