ptp: Fix compiler warnings in the testptp utility

Signed-off-by: Christian Riesch <[e-mail]>
Cc: Dong Zhu <[e-mail]>
Acked-by: Richard Cochran <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

Documentation/ptp/testptp.c

···
  */
 #include <errno.h>
 #include <fcntl.h>
+#include <inttypes.h>
 #include <math.h>
 #include <signal.h>
 #include <stdio.h>
···
 			interval = t2 - t1;
 			offset = (t2 + t1) / 2 - tp;
 
-			printf("system time: %ld.%ld\n",
+			printf("system time: %" PRId64 ".%u\n",
 				(pct+2*i)->sec, (pct+2*i)->nsec);
-			printf("phc    time: %ld.%ld\n",
+			printf("phc    time: %" PRId64 ".%u\n",
 				(pct+2*i+1)->sec, (pct+2*i+1)->nsec);
-			printf("system time: %ld.%ld\n",
+			printf("system time: %" PRId64 ".%u\n",
 				(pct+2*i+2)->sec, (pct+2*i+2)->nsec);
-			printf("system/phc clock time offset is %ld ns\n"
-				"system     clock time delay  is %ld ns\n",
+			printf("system/phc clock time offset is %" PRId64 " ns\n"
+			       "system     clock time delay  is %" PRId64 " ns\n",
 				offset, interval);
 		}