WiFi: Wait for driver to be ready before operation

This commit calls a vendor hal function to wait for the driver to be
ready before it resumes operation. This ensures the driver is ready
and interfaces are created before framework tries to use them.

Bug: 73482286
Test: Manual test (reboot and make sure wifi comes up consistently)
Test: The reboot test has been performed more than 10 times in a row
Test: Also, tested toggling wifi off/on then rebooted, wifi starts fine

Change-Id: I868dac6dbaa0a5248ae6e35d4ba915bc0c4de6eb
Signed-off-by: Ahmed ElArabawy <arabawy@google.com>