msm_fb: display: get mipi frame rate from panel file

If frame rate value for mipi video panel is coded in panel file it can
be directly used to avoid calculation error.

Change-Id: I6ad86226c81da4bcf36196385f9ff4bea0bef0ca
Signed-off-by: Huaibin Yang <huaibiny@codeaurora.org>

Conflicts:
	include/linux/msm_mdp.h
board-pyramid-display.c: Disable hardcoded clock rate values, compatible
with caf display hal
Add msm_hdmi_modes.h, required for display-caf