From: Shiyou Yin
loongson_asm.S is LoongArch asm optimization helper.
Add functions:
ff_h264_idct_add_8_lsx
ff_h264_idct8_add_8_lsx
ff_h264_idct_dc_add_8_lsx
ff_h264_idct8_dc_add_8_lsx
ff_h264_idct_add16_8_lsx
ff_h264_idct8_add4_8_lsx
ff_h264_idct_add8_8_lsx
ff_h264_idct_add8_422_
From: Shiyou Yin
loongson_asm.S is LoongArch asm optimization helper.
Add functions:
ff_h264_idct_add_8_lsx
ff_h264_idct8_add_8_lsx
ff_h264_idct_dc_add_8_lsx
ff_h264_idct8_dc_add_8_lsx
ff_h264_idct_add16_8_lsx
ff_h264_idct8_add4_8_lsx
ff_h264_idct_add8_8_lsx
ff_h264_idct_add8_422_