In order to prevent code ambiguous, add namespace on functions in ssp driver.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: NEric Miao <eric.y.miao@gmail.com>