[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>