amd: remove LLVM 8 support
v2: rebase - mareko
Signed-off-by: Samuel Pitoiset samuel.pitoiset@gmail.com (v1) Acked-by: Marek Olšák marek.olsak@amd.com
v2: rebase - mareko
Signed-off-by: Samuel Pitoiset samuel.pitoiset@gmail.com (v1) Acked-by: Marek Olšák marek.olsak@amd.com