libaudiohal: Handle failures of 'waitForService' and 'fromBinder'

Both 'waitForService' and 'fromBinder' may unexpectedly
return a nullptr on various transient failures. Since
we anyway plan to wait forever in 'waitForService',
implement retry logic to avoid crashing audioserver.

Bug: 330417729
Test: atest VtsHalAudioCoreTargetTest
(cherry picked from https://android-review.googlesource.com/q/commit:d8f2441693ce6c9abf4891a5163be7dcdba455d4)
Merged-In: Iecff8a7a0dffdb80009d26857cefd93d1c996d58
Change-Id: Iecff8a7a0dffdb80009d26857cefd93d1c996d58