ELF: Add -Qy as ignored option
ELF: Add -Qy as ignored option

GCC passes it by default on powerpc64 on FreeBSD. GNU ld claims "this
option is ignored for SVR4 compatibility", so we can ignore it too.

Differential Revision:	https://reviews.llvm.org/D24313


git-svn-id: f6089bf0e6284f307027cef4f64114ee9ebb0424@280864 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lld,llvm-mirror/lld