Replace tabs with spaces to line up usage

Signed-off-by: Maarten van Gompel <proycon@anaproy.nl>

programs/sxmo_vibratepine.c

@@ -30,7 +30,7 @@ void syscall_error(int is_err, const char* fmt, ...)
 
 void usage() {
 	fprintf(stderr, "Usage: sxmo_vibratepine duration_ms\n");
-	fprintf(stderr, "			 sxmo_vibratepine duration_ms strength_number\n");
+	fprintf(stderr, "       sxmo_vibratepine duration_ms strength_number\n");
 }
 
 int main(int argc, char* argv[])