[clang] [OpenMP] Silently accept `neon_vector_type` for the offloading device (PR #127439)

[Shilei Tian via cfe-commits]

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+// RUN: %clang -fopenmp --offload-arch=sm_90 -nocudalib -target aarch64-unknown-linux-gnu -c -Xclang -verify %s
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shiltian wrote:

Use `%clang_cc1` here instead of the driver.

https://github.com/llvm/llvm-project/pull/127439