ath9k_hw: Update AR9485 initvals to fix system hang issue

This patch fixes system hang when resuming from S3 state
and lower rate sens failure issue.

Cc: stable@kernel.org
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>