microsoft/clc: drop LLVM dependency to version < 12

Prior to LLVM 12, SmallVector requires 2 template arguments.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: c4755a7c32e66c ("microsoft/clc: Support SPIR intermediates in the compilation APIs")
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13083>
1 file changed