[media] s5k6aa: set usleep_range() range greater than 0

As this is not in atomic context and it does not seem like a critical
timing setting a range of 1ms allows the timer subsystem to optimize
the hrtimer here.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/i2c/s5k6aa.c

@@ -838,7 +838,7 @@ static int __s5k6aa_power_on(struct s5k6aa *s5k6aa)
 
 	if (s5k6aa->s_power)
 		ret = s5k6aa->s_power(1);
-	usleep_range(4000, 4000);
+	usleep_range(4000, 5000);
 
 	if (s5k6aa_gpio_deassert(s5k6aa, RST))
 		msleep(20);