libvpx

VPX: remove scaled calls from FUN_CONV_1D

and FUN_CONV_2D macros.  The predict lut now handles
this case.  The encoder now calls vpx_scaled_2d() instead
of vpx_convolve8() for scaling.

Change-Id: Ia1c8af8a31e4cb4887a587143108cb45835f7df7