m7-common: add widevine proprietary libs

Change-Id: I9ed86a8792ed282140b0a124438049db7b8ea20f
m7-common: restart adb on adb root

Change-Id: I405472267677265ac49a25b3e1a15e89c2fc6033
m7-common: fix recovery initscript name and copy

Change-Id: I40af5ff5c0e487ea1beb1e561d96b3e0447e4586