[clang] [llvm] [PowerPC] Add Support for BCDSHIFT, BCDSHIFTR, BCDTRUNC, BCDUTRUNC, and BCDUSHIFT instruction support (PR #154715)

[Sergei Barannikov via llvm-commits]

s-barannikov wrote:

Done, I verified locally that the build is in order and tests pass

https://github.com/llvm/llvm-project/pull/154715