Re-add GEMV fallback for Level3

Author: Mousius

cmake/kernel.cmake

@@ -169,6 +169,10 @@ if (BUILD_BFLOAT16)
   SetFallback(SHSWAPKERNEL ../arm/swap.c)
   SetFallback(TOBF16KERNEL ../x86_64/tobf16.c)
   SetFallback(BF16TOKERNEL ../x86_64/bf16to.c)
+  SetFallback(BGEMVNKERNEL ../generic/gemv_n.c)
+  SetFallback(BGEMVTKERNEL ../generic/gemv_t.c)
+  SetFallback(SBGEMVNKERNEL ../x86_64/sbgemv_n.c)
+  SetFallback(SBGEMVTKERNEL ../x86_64/sbgemv_t.c)
 endif ()
 endmacro ()