Kernel: Absorb LibBareMetal back into the kernel

This was supposed to be the foundation for some kind of pre-kernel
environment, but nobody is working on it right now, so let's move
everything back into the kernel and remove all the confusion.

Kernel/CMOS.cpp

@@ -25,7 +25,7 @@
  */
 
 #include <Kernel/CMOS.h>
-#include <LibBareMetal/IO.h>
+#include <Kernel/IO.h>
 
 namespace CMOS {