Change loop_filter_info from private struct to local, and also cache the lfi values in the struct instead of pointers. Reduces global reads and replaces with local memory reads.
Change loop_filter_info from private struct to local, and also cache
the lfi values in the struct instead of pointers. Reduces global reads
and replaces with local memory reads.

awatry/libvpx.opencl,awatry/libvpx.opencl,awatry/libvpx.opencl,awatry/libvpx.opencl