Phobos Kernel 1.0 for Tucana

Changelog:

• First release of Phobos Kernel, based on AliKernel
• Upstreamed to 4.14.277
• Caf tag upstreamed to LA.UM.9.1.r1-11900-SMxxx0.0
• Switch to Azure Clang
• Enable LLVM Polly optimizations
• Silence some debug and logspam
• More...