llvm

556e1a26 - Enable cmake argument passthrough in the SYCL configure wrapper (#17587)

Enable cmake argument passthrough in the SYCL configure wrapper (#17587) Hundreds of `--cmake-opt=-DFOO=BAR` on the command line make it hard to see the wood for the trees, so introduce an alternative which is to simply pass unknown argument flags straight through to cmake. This should make using the wrapper a little more pleasant and readable. CHERRY-PICK OF: c62abaeee9e6cb48d04fb623075705710089bd3f Patch-by: Luke Drummond <luke.drummond@codeplay.com>