torture: Make init program dump command-line arguments

This commit causes the init program generated by mkinitrd.sh dump out
its parameters.  Although this is in some sense redundant given that
the kernel already dumps them out, confirmation can be a good thing.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

tools/testing/selftests/rcutorture/bin/mkinitrd.sh

@@ -33,12 +33,16 @@ cat > init.c << '___EOF___'
 
 volatile unsigned long delaycount;
 
-int main(int argc, int argv[])
+int main(int argc, char *argv[])
 {
 	int i;
 	struct timeval tv;
 	struct timeval tvb;
 
+	printf("Torture-test rudimentary init program started, command line:\n");
+	for (i = 0; i < argc; i++)
+		printf(" %s", argv[i]);
+	printf("\n");
 	for (;;) {
 		sleep(1);
 		/* Need some userspace time. */