loongarch: match vpx_quantize_b_lsx's signature with rtcd

The signature of vpx_quantize_b_lsx in the source code doesn't match the RTCD script.

Changing the signature in the source code to match the RTCD script.

Change-Id: I76012150d0954e51b21ec5a230f1ccf79ee90a2d

vpx_dsp/loongarch/quantize_lsx.c

@@ -91,7 +91,7 @@ static INLINE int16_t accumulate_eob(__m128i eob) {
 
 #if !CONFIG_VP9_HIGHBITDEPTH
 
-void vpx_quantize_b_lsx(const int16_t *coeff_ptr, intptr_t n_coeffs,
+void vpx_quantize_b_lsx(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
                         const struct macroblock_plane *const mb_plane,
                         tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
                         const int16_t *dequant_ptr, uint16_t *eob_ptr,