amdgcn: Update datalayout after LLVM r328656

Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
Reviewed-by: Aaron Watry <awatry@gmail.com>
llvm-svn: 329290
GitOrigin-RevId: fd11db19c203d471c5fbd77ed1db8dc0bf2035f4
4 files changed