amdgcn-amdhsa: Convert get_{global,local}_size to clc for all llvm versions
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
Acked-By: Aaron Watry <awatry@gmail.com>
git-svn-id: https://llvm.org/svn/llvm-project/libclc/trunk@346083 91177308-0d34-0410-b5e6-96231b3b80d8