check v4l frame rate capability with bitwise method.

webrtc/modules/video_capture/linux/video_capture_linux.cc

Index: webrtc/modules/video_capture/linux/video_capture_linux.cc
diff --git a/webrtc/modules/video_capture/linux/video_capture_linux.cc b/webrtc/modules/video_capture/linux/video_capture_linux.cc
index 401a69d8c12c813b36674b86a8d40d1d870abc88..13149dcafcd705637d04c3b0bbf8aabc1502904c 100644
--- a/webrtc/modules/video_capture/linux/video_capture_linux.cc
+++ b/webrtc/modules/video_capture/linux/video_capture_linux.cc
@@ -245,7 +245,7 @@ int32_t VideoCaptureModuleV4L2::StartCapture(
       // continue
     } else {
       // check the capability flag is set to V4L2_CAP_TIMEPERFRAME.
-      if (streamparms.parm.capture.capability == V4L2_CAP_TIMEPERFRAME) {
+      if (streamparms.parm.capture.capability & V4L2_CAP_TIMEPERFRAME) {
         // driver supports the feature. Set required framerate.
         memset(&streamparms, 0, sizeof(streamparms));
         streamparms.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;