wil6210: increase firmware ready timeout

Firmware ready event may take longer than
current timeout in some scenarios, for example
with multiple RFs connected where each
requires an initial calibration.

Increase the timeout to support these scenarios.

Change-Id: Ie5d372fc3eb331c939265e0167b79f245d46379a
Signed-off-by: Hamad Kadmany <hkadmany@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Git-commit: 6ccae584014ef7074359eb4151086beef66ecfa9
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git


Signed-off-by: Maya Erez <merez@codeaurora.org>