qcom/audio/hal: Move the check for network opeartor to proper place

- Check for the network operator at boot up does not return correct
  value always
- For the T-Mobile, US the HANDSET and MIC devices need different
  gain settings
- Do the check before enabling those devices

Bug: 8255423
Change-Id: I58011f9c239dce87507b581a62e0dcc09164d15a
Signed-off-by: Iliyan Malchev <malchev@google.com>