When doing IPA initialization, WLAN driver registers a
notification callback for IPA uC ready. In the callback,
we directly set uc_loaded to true before scheduling a work
task to connect WLAN IPA pipes. However issue is that in
the work handler, uc_loaded is checked and if it is true,
we return without connecting WLAN IPA pipes.
Therefore properly set uc_loaded to true so that WLAN IPA
pipes can be connected correctly.
Change-Id: I27a14e627a1a75836f08dc5dec8c8b1d09725e10
CRs-Fixed: 2537625