ptp: Add adjust_phase to ptp_clock_caps capability.

Add adjust_phase to ptp_clock_caps capability to allow
user to query if a PHC driver supports adjust phase with
ioctl PTP_CLOCK_GETCAPS command.

Signed-off-by: Vincent Cheng <vincent.cheng.xh@renesas.com>
Reviewed-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tools/testing/selftests/ptp/testptp.c

@@ -269,14 +269,16 @@ int main(int argc, char *argv[])
 			       "  %d programmable periodic signals\n"
 			       "  %d pulse per second\n"
 			       "  %d programmable pins\n"
-			       "  %d cross timestamping\n",
+			       "  %d cross timestamping\n"
+			       "  %d adjust_phase\n",
 			       caps.max_adj,
 			       caps.n_alarm,
 			       caps.n_ext_ts,
 			       caps.n_per_out,
 			       caps.pps,
 			       caps.n_pins,
-			       caps.cross_timestamping);
+			       caps.cross_timestamping,
+			       caps.adjust_phase);
 		}
 	}