hammerhead: enable slimport detection after boot completion [DO NOT MERGE]

To prevent slimport error during boot up, wait until boot
completion before start slimport detection.

Bug: 11518558
Change-Id: I4d3e8bf27cebc5e79d566400d768fadc2873e9b5
reduce mic gain for video chat use case

Added new path for mic with AEC in speakerphone mode
for voice/video chat use case and reduced gain by 9 dB.

Bug: 13279002.

Change-Id: Idcfc9b07caa3b6f9d2cdfec98df426e73c4b45de
Change headset mic gain for voice call

Decrease headset mic gain by 8dB for
voice call

Bug: 11660005
Change-Id: I7c3545e21c4de5af3b32454a7228dad223f026e5