libvpx: Pull from upstream

source/libvpx/vpx_scale/vpx_scale_rtcd.sh

-vpx_scale_forward_decls() {
-cat <<EOF
-struct yv12_buffer_config;
-EOF
-}
-forward_decls vpx_scale_forward_decls
-
-# Scaler functions
-if [ "$CONFIG_SPATIAL_RESAMPLING" = "yes" ]; then
-    prototype void vp8_horizontal_line_5_4_scale "const unsigned char *source, unsigned int source_width, unsigned char *dest, unsigned int dest_width"
-    prototype void vp8_vertical_band_5_4_scale "unsigned char *source, unsigned int src_pitch, unsigned char *dest, unsigned int dest_pitch, unsigned int dest_width"
-    prototype void vp8_horizontal_line_5_3_scale "const unsigned char *source, unsigned int source_width, unsigned char *dest, unsigned int dest_width"
-    prototype void vp8_vertical_band_5_3_scale "unsigned char *source, unsigned int src_pitch, unsigned char *dest, unsigned int dest_pitch, unsigned int dest_width"
-    prototype void vp8_horizontal_line_2_1_scale "const unsigned char *source, unsigned int source_width, unsigned char *dest, unsigned int dest_width"
-    prototype void vp8_vertical_band_2_1_scale "unsigned char *source, unsigned int src_pitch, unsigned char *dest, unsigned int dest_pitch, unsigned int dest_width"
-    prototype void vp8_vertical_band_2_1_scale_i "unsigned char *source, unsigned int src_pitch, unsigned char *dest, unsigned int dest_pitch, unsigned int dest_width"
-fi
-
-prototype void vp8_yv12_extend_frame_borders "struct yv12_buffer_config *ybf"
-specialize vp8_yv12_extend_frame_borders neon
-
-prototype void vp8_yv12_copy_frame "const struct yv12_buffer_config *src_ybc, struct yv12_buffer_config *dst_ybc"
-specialize vp8_yv12_copy_frame neon
-
-prototype void vpx_yv12_copy_y "const struct yv12_buffer_config *src_ybc, struct yv12_buffer_config *dst_ybc"
-specialize vpx_yv12_copy_y neon
-
-if [ "$CONFIG_VP9" = "yes" ]; then
-    prototype void vp9_extend_frame_borders "struct yv12_buffer_config *ybf"
-    specialize vp9_extend_frame_borders dspr2
-
-    prototype void vp9_extend_frame_inner_borders "struct yv12_buffer_config *ybf"
-    specialize vp9_extend_frame_inner_borders dspr2
-fi