libhardware: Add sound card status parameter

Currently audiod monitoring sound card status instead of adsp status.
This is a bug fix to monitor sound card. Audio HAL is going to use
sound card key to check sound card to status.

Change-Id: If2eba2aad2a70a414c8b258bba1ecd8f3a4b8df1
Merge remote-tracking branch 'cm/kitkat' into kitkat