add scripts to support imoseyon/leanKernel

picked from:

  - https://github.com/imoseyon/leanKernel-note3/commit/a66f9bbc5940aded0a23761ca02f931854a8d141#diff-a86de7cdf475671f039730c2b713b7ab
  - https://github.com/imoseyon/leanKernel-note3/commit/35d5b342248572d14cf7cb6d045ffb81b528203e#diff-a86de7cdf475671f039730c2b713b7ab

ps2:update copy location & new lkconfig
Change-Id: I11ef6cb603210137e763c5f4b14a3914de0c59e4
give lkconfig executable permissions

Change-Id: I05a0aa8efdc229d6830ddeb9fee83bf1d198964f
hlte: Enable compressed VoIP

Change-Id: I15edc077b3be10a91bad6dd685a56b4b833ef8bb
hlte: Add permission for HDCP properties

Change-Id: Ie07ad73bc777fbb2ee007c72f875c0715463802c
hlte: Enable hardware AAC encoder

Change-Id: I3a7ef8bed5db06a1184230d994668b0920ab4990
hlte: remove network_mode.xml overlay

Change-Id: I2807eaa6865f07c80824990500441c708e523cec
hlte: Mount firmware partitions as drmrpc group

 * This will fix the firmware loader issues.

Change-Id: Id3444bfe81e2a61e5db6df319ccc3669e803ce23