[runtimes] Add install-*-stripped targets

These should be the only remaining missing install-*-stripped targets.
They're modeled after the existing install targets.

Differential Revision: https://reviews.llvm.org/D40927

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@320182 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed