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/Time/HPET.h

@@ -31,8 +31,8 @@
 #include <AK/OwnPtr.h>
 #include <AK/Types.h>
 #include <AK/Vector.h>
+#include <Kernel/PhysicalAddress.h>
 #include <Kernel/VM/Region.h>
-#include <LibBareMetal/Memory/PhysicalAddress.h>
 
 namespace Kernel {
 

Kernel/Time/PIT.cpp

@@ -30,7 +30,7 @@
 #include <Kernel/Thread.h>
 #include <Kernel/Time/PIT.h>
 #include <Kernel/Time/TimeManagement.h>
-#include <LibBareMetal/IO.h>
+#include <Kernel/IO.h>
 
 #define IRQ_TIMER 0
 namespace Kernel {

Kernel/Time/RTC.cpp

@@ -28,7 +28,7 @@
 #include <Kernel/CMOS.h>
 #include <Kernel/Time/RTC.h>
 #include <Kernel/Time/TimeManagement.h>
-#include <LibBareMetal/IO.h>
+#include <Kernel/IO.h>
 
 namespace Kernel {
 #define IRQ_TIMER 8