lavu/riscv: depend on RVB and simplify accordingly

libavutil/riscv/fixed_dsp_init.c

@@ -45,7 +45,7 @@ av_cold void ff_fixed_dsp_init_riscv(AVFixedDSPContext *fdsp)
 #if HAVE_RVV
     int flags = av_get_cpu_flags();
 
-    if ((flags & AV_CPU_FLAG_RVV_I32) && (flags & AV_CPU_FLAG_RVB_ADDR)) {
+    if ((flags & AV_CPU_FLAG_RVV_I32) && (flags & AV_CPU_FLAG_RVB)) {
         if (flags & AV_CPU_FLAG_RVV_I64) {
             fdsp->vector_fmul_window_scaled = ff_vector_fmul_window_scaled_rvv;
             fdsp->vector_fmul_window = ff_vector_fmul_window_fixed_rvv;

libavutil/riscv/float_dsp_init.c

@@ -54,7 +54,7 @@ av_cold void ff_float_dsp_init_riscv(AVFloatDSPContext *fdsp)
 #if HAVE_RVV
     int flags = av_get_cpu_flags();
 
-    if (flags & AV_CPU_FLAG_RVB_ADDR) {
+    if (flags & AV_CPU_FLAG_RVB) {
         if (flags & AV_CPU_FLAG_RVV_F32) {
             fdsp->vector_fmul = ff_vector_fmul_rvv;
             fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_rvv;

libavutil/riscv/lls_init.c

@@ -47,9 +47,8 @@ av_cold void ff_init_lls_riscv(LLSModel *m)
 #if HAVE_RVV
     int flags = av_get_cpu_flags();
 
-    if ((flags & AV_CPU_FLAG_RVB_ADDR) && (flags & AV_CPU_FLAG_RVV_F64)) {
-        if ((flags & AV_CPU_FLAG_RVB_BASIC) &&
-            ff_get_rv_vlenb() > m->indep_count)
+    if ((flags & AV_CPU_FLAG_RVB) && (flags & AV_CPU_FLAG_RVV_F64)) {
+        if (ff_get_rv_vlenb() > m->indep_count)
             m->update_lls = ff_lls_update_rvv;
         m->evaluate_lls = ff_lls_evaluate_rvv;
     }