v3dv: don't check if DRM device is master

This was added to ensure we can get its resources, but they can be
obtained also from non master.

Fixes: 2af12c5b36 ("v3dv: Check multiple DRM primary nodes before picking the display fd")
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/12641
Signed-off-by: Juan A. Suarez Romero <jasuarez@igalia.com>
Reviewed-by: Maíra Canal <mcanal@igalia.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34366>

src/broadcom/vulkan/v3dv_device.c

@@ -1513,12 +1513,7 @@ try_display_device(struct v3dv_instance *instance, const char *path,
     * drivers for different types of connectors and the one with a connected
     * output may not be vc4, which unlike Raspberry Pi 4, doesn't drive the
     * DSI output for example.
-    *
-    * If the display device isn't the DRM master, we can't get its resources.
     */
-   if (!drmIsMaster(*fd))
-      goto fail;
-
    drmModeResPtr mode_res = drmModeGetResources(*fd);
    if (!mode_res) {
       mesa_loge("Failed to get DRM mode resources: %s\n", strerror(errno));