hal: set default sample rate for concurrent use case with combo device

-set sample rate to 48khz if any combo use case is present and
 device has only one clock source, it cannot
 support different sample rate for HS and SPKR
 devices.
-Use default sample rate in such concurrent use cases.
Change-Id: Ib6d1356949c632bc086db8fa2e874c4077551976