serial: sirf: assign console default index if users not set a valid one

it seems this is a more typical behaviour from reviewing other console
drivers.

Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Qipan Li 2015-05-14 06:45:26 +00:00 • committed by Greg Kroah-Hartman
commit c35b49b716