starfive: v4l2test: Support select connector to display for drm

Add -C param to select connector
0---inno hdmi
1---rgb hdmi or mipi dsi

Signed-off-by: Jianlong Huang <jianlong.huang@starfivetech.com>

package/starfive/v4l2_test/stf_drm.h

@@ -37,6 +37,7 @@ typedef struct drm_dev_t {
 typedef struct DRMParam_t {
     drm_dev_t* dev_head;
     int fd;
+    int connector_id;
 } DRMParam_t;