disp: msm: dsi: add qsync min fps val in dsi display mode priv info

In the current code for finding the qsync min fps for a
mode, entire mode list is iterated which involves acquiring
dsi display_lock. During conn tx debugfs commands, if
qsync min fps is required, we try to acquire dsi
display_lock twice which results in hang state. This change
adds qsync min fps value in dsi_display_mode_priv_info
struct in order to get the qsync fps from the
msm_display_mode present in connector state instead of
looping through all the modes to find the mode qsync fps.

Change-Id: Ifded40d1f12462bb50fc7bdafb746ae5b8d9512a
Signed-off-by: Yashwanth <yvulapu@codeaurora.org>

msm/sde/sde_connector.h

@@ -399,11 +399,10 @@ struct sde_connector_ops {
 
 	/**
 	 * get_qsync_min_fps - Get qsync min fps from qsync-min-fps-list
-	 * @display: Pointer to private display structure
 	 * @conn_state: Pointer to drm_connector_state structure
 	 * Returns: Qsync min fps value on success
 	 */
-	int (*get_qsync_min_fps)(void *display, struct drm_connector_state *conn_state);
+	int (*get_qsync_min_fps)(struct drm_connector_state *conn_state);
 
 	/**
 	 * get_avr_step_req - Get the required avr_step for given fps rate