In order to build generic system image that is agnostic to SoC or
device, such HALs should be moved from system partition to vendor
partition.
HALs moved: copybit, gralloc, hwcomposer, light, memtrack, hdmi_cec
Bug: 34826389
Bug: 35232083
Test: build & run and check whether the HAL is loaded from
/vendor/lib[64]/hw.
$ su; lsof | grep hwcomposer
Change-Id: I2bb617ac71ab040a5b1ba306c194e8672ac84561