[lld] [ELF] Align the end of PT_GNU_RELRO associated PT_LOAD to a common-page-size boundary (PR #66042)

[Jan Patrick Lehr via llvm-commits]

jplehr wrote:

This seems to have broken the AMDGPU OpenMP staging buildbot https://lab.llvm.org/staging/#/builders/247/builds/6482 

https://github.com/llvm/llvm-project/pull/66042