can: gs_usb: add HW timestamp bits

Link: candle-usb/candleLight_fw@44431f4
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

drivers/net/can/usb/gs_usb.c

@@ -92,6 +92,7 @@ struct gs_device_config {
 #define GS_CAN_MODE_LOOP_BACK BIT(1)
 #define GS_CAN_MODE_TRIPLE_SAMPLE BIT(2)
 #define GS_CAN_MODE_ONE_SHOT BIT(3)
+#define GS_CAN_MODE_HW_TIMESTAMP BIT(4)
 
 struct gs_device_mode {
 	__le32 mode;
@@ -148,6 +149,7 @@ struct gs_host_frame {
 	u8 reserved;
 
 	u8 data[8];
+	u32 timestamp_us;
 } __packed;
 /* The GS USB devices make use of the same flags and masks as in
  * linux/can.h and linux/can/error.h, and no additional mapping is necessary.