[clang] [Sema] Add check for bitfield assignments to larger integral types (PR #68276)

[antoine moynault via cfe-commits]

antmox wrote:

Hi!
This commit broke some armv8/armv7 bots:
https://lab.llvm.org/buildbot/#/builders/245/builds/15263
https://lab.llvm.org/buildbot/#/builders/187/builds/13069
Int & Void* have the same size there, so no warning on bitfield-width.c:20.


https://github.com/llvm/llvm-project/pull/68276