[llvm] [MC][Mips] Rename MipsMCAsmInfo to MipsELFMCAsmInfo (PR #112592)

[Hervé Poussineau via llvm-commits]

hpoussin wrote:

This is an extract of PR #107744
This commit is better viewed when ignoring whitespace changes.

https://github.com/llvm/llvm-project/pull/112592