cnss2: Increase boot timer for calibration mode

Boot time for calibration mode may take longer than what it
expects. Hence increase the boot timer accordingly. Ignore
calibration failure as well since it is not critical to
block mission mode.

Change-Id: I20894ae2eeaa4912f8c0d895e45453eba1bcd1cf
Signed-off-by: Yue Ma <yuem@codeaurora.org>