update firmware for t769
Replace some camera blobs with their ICS versions, rename the sensors blob, and update t769-vendor-blobs.mk to match the name change. Fixes camera and light sensor (light sensor fix courtesy of @Meticulus).

Change-Id: I0302133e47427773645ad8c2b4f0c72ec0f69162
update drivers to fix weak wifi signal
Replace some camera blobs with their ICS versions, rename the sensors blob, and update t769-vendor-blobs.mk to match the name change. Fixes camera and light sensor (light sensor fix courtesy of @Meticulus).

Change-Id: I683c9fa4fdc31215a6cd25b4a2da7fb3fc2163e2