[clang] [clang] Add SPIRVTypes.def to the module map (PR #228240)

[Alexey Bader via cfe-commits]

bader wrote:

> > Thanks! Could someone merge it for me please? I do not have write access.
> 
> Thats the challenge these days :D Github isn't really letting us merge anything except as 'auto merge', so until there is some sort of 'rebase' button available, we cant cause that.

ha-ha

I guess "squash and merge" button is good enough. ;)

https://github.com/llvm/llvm-project/pull/228240