Fix regression in one-step configuration.

We activate on-step mode based on the "time_stamping" and
"twoStepFlag" configuration options.  If twoStepFlag is false and HW
time stamping is enabled, we upgrade the time stamping mode variable
to one-step.

The code that tests the options and sets the one-step mode moved from
ptp4l.c into clock.c in commit 9b27664c ("clock: simplify the create
method.").  However, that commit inadvertently moved the test after
the place where the time stamping mode is latched in a local variable.
As a result, one-step mode is not activated when configured.

This patch fixes the issue by keeping the local time stamping mode
variable up to date during the one-step test.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>

clock.c

@@ -898,6 +898,7 @@ struct clock *clock_create(enum clock_type type, struct config *config,
 			       "with hardware time stamping");
 			return NULL;
 		case TS_HARDWARE:
+			timestamping = TS_ONESTEP;
 			if (config_set_int(config, "time_stamping", TS_ONESTEP))
 				return NULL;
 			break;