msm_fb: display: Update video format on fps change

Added check for frame rate change. Corner case if there is no
change in xres,yres and pixclock.

Change-Id: I0ff5eb65364d2a370e0973da7e84f738bd042a20
CRs-Fixed: 356328
Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>
diff --git a/drivers/video/msm/external_common.c b/drivers/video/msm/external_common.c
index 5d12e97..7f603dd 100644
--- a/drivers/video/msm/external_common.c
+++ b/drivers/video/msm/external_common.c
@@ -2056,6 +2056,7 @@
 	pinfo->xres = timing->active_h;
 	pinfo->yres = timing->active_v;
 	pinfo->clk_rate = timing->pixel_freq*1000;
+	pinfo->frame_rate = 60;
 
 	pinfo->lcdc.h_back_porch = timing->back_porch_h;
 	pinfo->lcdc.h_front_porch = timing->front_porch_h;