add Miracast overlay flag

Change-Id: I09e5068bbc2059fa3def9be8434cb082d74424cd
Revert "Turn off BLE, GATT, and SMP of Bluetooth stack"

This reverts commit 67b7e3ac6f697f37b709a403dbe82d7ec6a83e55.

Enable BLE, GATT and SMP for Nexus 7 2012 grouper and tilapia

Change-Id: I640b3b76a341efc98d1ed69b1dc60425cdc0070b
(cherry picked from commit f2a4cff785ba1070a4be342f2a86b00cd2248445)
Snapshot to 3fac2c96ae27d71378b421affda0caef6e5572c1

Conflicts:
	kernel

Change-Id: Ifb5e49207acdb07cb9bf9b4e886b92e8b284f487