selftests: watchdog: cleanup whitespace in usage options

Convert hard spaces to tabs in usage options.
Suggested-by: NShuah Khan <shuah@kernel.org>
Signed-off-by: NGeorge G. Davis <george_davis@mentor.com>
Signed-off-by: NShuah Khan <skhan@linuxfoundation.org>

tools/testing/selftests/watchdog/watchdog-test.c

@@ -70,18 +70,19 @@ static void term(int sig)
 static void usage(char *progname)
 {
 	printf("Usage: %s [options]\n", progname);
-	printf(" -f, --file          Open watchdog device file\n");
-	printf("                     Default is /dev/watchdog\n");
-	printf(" -b, --bootstatus    Get last boot status (Watchdog/POR)\n");
-	printf(" -d, --disable       Turn off the watchdog timer\n");
-	printf(" -e, --enable        Turn on the watchdog timer\n");
-	printf(" -h, --help          Print the help message\n");
-	printf(" -p, --pingrate=P    Set ping rate to P seconds (default %d)\n", DEFAULT_PING_RATE);
-	printf(" -t, --timeout=T     Set timeout to T seconds\n");
-	printf(" -T, --gettimeout    Get the timeout\n");
-	printf(" -n, --pretimeout=T  Set the pretimeout to T seconds\n");
-	printf(" -N, --getpretimeout Get the pretimeout\n");
-	printf(" -L, --gettimeleft   Get the time left until timer expires\n");
+	printf(" -f, --file\t\tOpen watchdog device file\n");
+	printf("\t\t\tDefault is /dev/watchdog\n");
+	printf(" -b, --bootstatus\tGet last boot status (Watchdog/POR)\n");
+	printf(" -d, --disable\t\tTurn off the watchdog timer\n");
+	printf(" -e, --enable\t\tTurn on the watchdog timer\n");
+	printf(" -h, --help\t\tPrint the help message\n");
+	printf(" -p, --pingrate=P\tSet ping rate to P seconds (default %d)\n",
+	       DEFAULT_PING_RATE);
+	printf(" -t, --timeout=T\tSet timeout to T seconds\n");
+	printf(" -T, --gettimeout\tGet the timeout\n");
+	printf(" -n, --pretimeout=T\tSet the pretimeout to T seconds\n");
+	printf(" -N, --getpretimeout\tGet the pretimeout\n");
+	printf(" -L, --gettimeleft\tGet the time left until timer expires\n");
 	printf("\n");
 	printf("Parameters are parsed left-to-right in real-time.\n");
 	printf("Example: %s -d -t 10 -p 5 -e\n", progname);