m8: merge BoardConfig/BoardConfigCommon

Change-Id: I319ec880230dabf6f0154ddd0deb8f06ae2c2bbe
audio: remove unused audio_effects.conf

Change-Id: I73d8b490559fe098ce09d5e323d92f94ca7b48c5
m8: Add HTC market permissions

Change-Id: I90eefd4d61df7d1f608bfed87c06064775cd6c1b
props: move to system.prop and general cleanup

Change-Id: I8656d8ba1b837602e9d294762304faf1d4363f53
Enable LTE network settings

The only options we have to choose from are 3G & 2G. If either of those are selected there is no way to get back on an LTE network.

Change-Id: Ie2e41ff9e2c964ef3a47844d1702cf40df180bdc