python3-numpy: Enable vector extentions since highway pkg needs it

Fixes
| ../numpy-2.2.3/numpy/_core/src/highway/hwy/ops/rvv-inl.h:644:17: error: use of undeclared identifier '__riscv_vsetvl_e32mf2'
| ../numpy-2.2.3/numpy/_core/src/highway/hwy/ops/rvv-inl.h:644:17: error: use of undeclared identifier '__riscv_vsetvl_e32mf2'
| ../numpy-2.2.3/numpy/_core/src/highway/hwy/ops/rvv-inl.h:644:17: error: use of undeclared identifier '__riscv_vsetvlmax_e64m1'
| ../numpy-2.2.3/numpy/_core/src/highway/hwy/ops/rvv-inl.h:644:17: error: use of undeclared identifier '__riscv_vsetvl_e64m1'
| ../numpy-2.2.3/numpy/_core/src/highway/hwy/ops/rvv-inl.h:644:17: error: use of undeclared identifier '__riscv_vsetvl_e64m1'
| ../numpy-2.2.3/numpy/_core/src/highway/hwy/ops/rvv-inl.h:644:17: error: use of undeclared identifier '__riscv_vsetvl_e64m1'
| fatal error: too many errors emitted, stopping now [-ferror-limit=]

Signed-off-by: Khem Raj <[email protected]>

Author: kraj

conf/nonclangable.conf

@@ -545,6 +545,11 @@ CFLAGS:append:pn-pixman:arm:toolchain-clang = " -no-integrated-as"
 #  vsetvli zero, zero, e16, m1
 CFLAGS:append:pn-dav1d:riscv64:toolchain-clang = " -no-integrated-as"
 
+# ../numpy-2.2.3/numpy/_core/src/highway/hwy/ops/rvv-inl.h:644:17: error: use of undeclared identifier '__riscv_vsetvl_e8mf8'
+# This only happens with clang with rv64gc
+TOOLCHAIN_OPTIONS:append:pn-python3-numpy:riscv64:toolchain-clang = " -march=rv64gcv"
+TOOLCHAIN_OPTIONS:append:pn-python3-numpy:riscv32:toolchain-clang = " -march=rv32gcv"
+
 # test_connectx segfaults with this option set to -fstack-protector-strong
 SECURITY_STACK_PROTECTOR:pn-lksctp-tools:toolchain-clang = ""