[compiler-rt] [Memprof] Changes `HISTOGRAM_GRANULARITY` from 8U to 8ULL. (PR #100949)

[Matthew Weingarten via llvm-commits]

mattweingarten wrote:

> Did this affect the callback handling in a way that was user visible and affected the profile results? If so, perhaps a test can be added for that case, since the IR case will be effectively tested once PR100834 goes in.

No there is no effect that is visible. Only the shadow adress translation is affected, so the counters have a different address  inside the shadow space. 

https://github.com/llvm/llvm-project/pull/100949