find5: switch to 4.2 modem firmware and device cleanup

this use the same MAC adress patching like n1
Cleanup BT config and remove useless bdAddrLoader

PS7
adding waiting for opponviteme on clean start

PS8
remove -DQCOM_BSP_CAMERA_ABI_HACK

Change-Id: I37337472ebdf4e85ec7169b83d535f9a84b62b13