dev: gcdb: add support to specify the DSI PLL from fastboot oem

For single/split DSI cases, depending on the DSI PHY version, there
is support to select DSI PLL0/PLL1 to drive the DSI controller/PHY.
Add support to specify this using fastboot oem command.

Example:
fastboot oem select-display-panel jdi_1080p_video:pll0
fastboot oem select-display-panel jdi_1080p_video:pll0:disable
fastboot oem select-display-panel jdi_1080p_video:pll1#sim-swte:disable
fastboot oem select-display-panel jdi_1080p_video:skip:pll1

Change-Id: Ie74710c3047ccca4addd9c00611682b726befb76
diff --git a/dev/gcdb/display/gcdb_display.h b/dev/gcdb/display/gcdb_display.h
index 0f38d5e..088aa05 100755
--- a/dev/gcdb/display/gcdb_display.h
+++ b/dev/gcdb/display/gcdb_display.h
@@ -64,6 +64,7 @@
 	struct msm_panel_info *pinfo, struct mdss_dsi_phy_ctrl *phy_db);
 void set_panel_cmd_string(const char *panel_name);
 struct oem_panel_data mdss_dsi_get_oem_data(void);
+struct oem_panel_data *mdss_dsi_get_oem_data_ptr(void);
 struct panel_struct mdss_dsi_get_panel_data(void);
 
 struct oem_panel_data  {
@@ -73,6 +74,13 @@
 	bool skip;
 	uint32_t sim_mode;
 	char dsi_config[DSI_CFG_SIZE];
+	uint32_t dsi_pll_src;
+};
+
+enum {
+    DSI_PLL_DEFAULT,
+    DSI_PLL0,
+    DSI_PLL1,
 };
 
 #endif /*_GCDB_DISPLAY_H_ */