[clang] [clang][RISCV] Bump RVV intrinsic to version 1.0 (PR #116597)

[Jessica Clarke via cfe-commits]

jrtc27 wrote:

> Considering the define is guarded behind `if (ISAInfo->hasExtension("zve32x"))`, this doesn't seem to implement: [riscv-non-isa/rvv-intrinsic-doc#382](https://github.com/riscv-non-isa/rvv-intrinsic-doc/pull/382)

Presumably that (rather terse) sentence in the specification is that even, say, RV64GC can check the macro and include riscv_vector.h, so that it can then do `__attribute__((__target__(...)))` and use it in certain functions?

https://github.com/llvm/llvm-project/pull/116597