llvm: Upgrade to 16.0.5

Release notes

16.0.4 - https://discourse.llvm.org/t/16-0-4-release/70692

16.0.5 - https://discourse.llvm.org/t/16-0-5-releae/71097



Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>