Add SUSE vendor

Summary: SUSE's ARM triples end with -gnueabi even though they are hard-float. This requires special handling of SUSE ARM triples. Hence we need a way to differentiate the SUSE as vendor. This CL adds that.

Reviewers: chandlerc, compnerd, echristo, rengolin

Reviewed By: rengolin

Subscribers: aemerson, rengolin, llvm-commits

Differential Revision: https://reviews.llvm.org/D32426

llvm-svn: 301174