[llvm] [BOLT][NFC] Set minimal alignment for BF (PR #67707)

[Vladislav Khmelevsky via llvm-commits]

yota9 wrote:

@maksfb I fill like setting minimal required alignment per BF is more proper way to fix the CI alignment issue to be honest. So we would have "minimal alignment" field that is the BFs guaranteed alignment that we would have and the alignment/maxbyte alignment non guaranteed logic. What do you think? Thanks!

https://github.com/llvm/llvm-project/pull/67707