msm: display: add display commit ioctl

Display commit ioctl will do what pan_display
can do, addtionally has customized setting, such
as non-blocking call.

(cherry picked from commit d88df9d27e44fc35d16c7a4ea92508db1df12d8f)

Change-Id: I17e781c96f93f3d937020392e3bb7f090283a0b2
Signed-off-by: Ken Zhang <kenz@codeaurora.org>
Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>

Conflicts:

	drivers/video/msm/msm_fb.c
	include/linux/msm_mdp.h

Conflicts:
	drivers/video/msm/msm_fb.c
	include/linux/msm_mdp.h