I found fhe following message in the LLVMLinux mailing list.
THere Bernhard Rosenkränzer says he was able to compile a specific linux kernel version. For android and x86_64.
But he had some failures during booting.
Those of you who are interested can read the message for more details.
I would really like to see a working Linux kernel compiled with Clang und linked with LLD. Linking Linux with LLD is currently in progress. See llvm-dev.
I personnally am only a simple user of clang. I have no experience in compiler internals or kernel programming.