disp: msm: add qsync refresh rate support per mode

This change adds support for qsync min refresh rate per
timing mode and populates qsync min refresh rate based
on the current fps when qsync is enabled.

Change-Id: I191d1d72e95dd065c8c0b56a6100104c00c6d8f6
Signed-off-by: Yashwanth <yvulapu@codeaurora.org>

msm/dsi/dsi_display.h

@@ -419,15 +419,6 @@ void dsi_display_put_mode(struct dsi_display *display,
  */
 int dsi_display_get_default_lms(void *dsi_display, u32 *num_lm);
 
-/**
- * dsi_display_get_qsync_min_fps() - get qsync min fps for given fps
- * @display:            Handle to display.
- * @mode_fps:           Fps value of current mode
- *
- * Return: Qsync min fps rate or -ve error code.
- */
-int dsi_display_get_qsync_min_fps(void *dsi_display, u32 mode_fps);
-
 /**
  * dsi_display_get_avr_step_req_fps() - get avr step rate for given fps
  * @display:            Handle to display.