[ELF] Rearrange relocation codes in natural order. NFC.
[ELF] Rearrange relocation codes in natural order. NFC.

Differential revision: http://reviews.llvm.org/D15045


git-svn-id: f6089bf0e6284f307027cef4f64114ee9ebb0424@254393 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lld,llvm-mirror/lld