[clang] [Clang][ARM] Make CRC and DSP intrinsics always available. (PR #107417)

[David Green via cfe-commits]

https://github.com/davemgreen commented:

I think this is OK but do you know if the dsp side works with cortex-m? Target attributes are less likely to be used there, but it's worth testing if the command line args are still all happy.

https://github.com/llvm/llvm-project/pull/107417