msm_fb: display: commit mdp baselayer pipe

When in resume or boot time, baselayer pipes need to be committed for
mdp to play, otherwize underruns and blue screens are seen. The
previous pipe stage up func has this commit which is removed now, so
the commit calls have to be added for the cases where base pipe is
initialized.

Change-Id: I63a7d0ac3fb078b3d7f604eb646a0430326a478c
Signed-off-by: Huaibin Yang <huaibiny@codeaurora.org>
Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>