audio: add device constants for HDMI EARC

Implementation check by grep -E -r  "HDMI_ARC|HDMI_EARC" .

Test: atest AudioDeviceInfoTest
Bug: 131385398
Bug: 151781316
Merged-In: I4d84c8cc25dffdfced32f17411b65d1db4b09dbb
Change-Id: I4d84c8cc25dffdfced32f17411b65d1db4b09dbb
2 files changed