Merge pull request #4477 from martin-frbg/c910caxpy

Temporarily disable the CAXPY/ZAXPY kernels for C910V to workaround a CI hang

kernel/riscv64/KERNEL.C910V

@@ -42,8 +42,8 @@ ZSUMKERNEL  = ../arm/zsum.c
 
 SAXPYKERNEL  = axpy_vector.c
 DAXPYKERNEL  = axpy_vector.c
-CAXPYKERNEL  = zaxpy_vector.c
-ZAXPYKERNEL  = zaxpy_vector.c
+CAXPYKERNEL  = zaxpy.c
+ZAXPYKERNEL  = zaxpy.c
 
 SAXPBYKERNEL  = axpby_vector.c
 DAXPBYKERNEL  = axpby_vector.c