serial: sirf: add serial loopback function support

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 06:45:25 +00:00 • committed by Greg Kroah-Hartman
commit 7f60f2fe16
2 changed files with 21 additions and 1 deletions