hal: Update VOIP playback/record usecase handling

Existing handling for VOIP playback checks for flags
DIRECT|VOIP_RX to set up VOIP usecase. This handling
needs to be updated to consider client opening
stream with VOIP_RX only.
On input stream open, selected channel count and sample
rate need to be updated in hidl stream ptr.

Change-Id: I676d3e5a34f32b8996c95ddaf5db01725b225b58