msm: fb: make the pan task interruptible
msm: display: allow fb open even in suspend state

resume might be coming later, allow fb open sucessfully, only
panel driver needs be delayed

Signed-off-by: Ken Zhang <kenz@codeaurora.org>

Conflicts:

	drivers/video/msm/mipi_dsi.c
	drivers/video/msm/msm_fb.c
msm: display: panel recovering from suspend

In suspend state, fb_open cannot turn on panel, need save this info
for resume.
In suspend state, blank setting needs be cached to be used at resuming.

Signed-off-by: Ken Zhang <kenz@codeaurora.org>
msm: display: Do not create release fence in suspend

When in suspend state, display operation will be stopped,
fence will not be signaled

Signed-off-by: Ken Zhang <kenz@codeaurora.org>