otter-common: wl127x: Use firmware in hardware/ti/wlan

no reason for use prebuilt since http://review.cyanogenmod.org/#/c/51224/

Change-Id: I8184f8fb776edb1fd23ece6f80bcb546d6e3e184
otter-common: Remove old Trebuchet overlay

Change-Id: I5a8c58e48e122670e9255a0030dfee55d8ca84b8
Merge "otter-common: Remove old Trebuchet overlay" into cm-11.0
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0

Conflicts:
	common.mk