i9100g: Add wpa/p2p_supplicant overlays && update Wi-Fi init props

Updated props taken from grouper.

Change-Id: I7cd76937077087dd1ac33f660227e8d8d4a41927
i9100g: Add loudness_enhancer audio effect && unbork previously implemented effects

Change-Id: Icbbd2de067973e2c6b4734ebba8e4890b7716b3c
i9100g: Update VP8 codec name, enable VP9 decoder

Change-Id: I9a0194e5e9c51bb748a99462e635dfa6497d4d33
i9100g: Temporarily comment out unused parameters

Change-Id: I2c9e8ad991e7b270d8bb73ce5af7216da120933e
i9100g: Update dependencies

Change-Id: I7bce735bbf821e7c16b788f7d3dc111bc90891a7