tools: gpio: Fix the wrong format specifier

The unsigned int should use "%u" instead of "%d".

Signed-off-by: Zhu Jun <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Bartosz Golaszewski <[e-mail]>

tools/gpio/gpio-hammer.c

···
 
 	fprintf(stdout, "Hammer lines [");
 	for (i = 0; i < num_lines; i++) {
-		fprintf(stdout, "%d", lines[i]);
+		fprintf(stdout, "%u", lines[i]);
 		if (i != (num_lines - 1))
 			fprintf(stdout, ", ");
 	}
···
 
 		fprintf(stdout, "[");
 		for (i = 0; i < num_lines; i++) {
-			fprintf(stdout, "%d: %d", lines[i],
+			fprintf(stdout, "%u: %d", lines[i],
 				gpiotools_test_bit(values.bits, i));
 			if (i != (num_lines - 1))
 				fprintf(stdout, ", ");