[Base] Split of xbox.h file

- Splitted into: kernel.h and xam.h
- Removed UpdateSpaData from KernelState into ContentManager

src/xenia/kernel/xboxkrnl/xboxkrnl_ob.h

@@ -11,7 +11,7 @@
 #define XENIA_KERNEL_XBOXKRNL_XBOXKRNL_OB_H_
 
 #include "xenia/cpu/ppc/ppc_context.h"
-#include "xenia/xbox.h"
+#include "xenia/kernel/kernel.h"
 
 using PPCContext = xe::cpu::ppc::PPCContext;
 

src/xenia/kernel/xboxkrnl/xboxkrnl_video.h

@@ -10,7 +10,7 @@
 #ifndef XENIA_KERNEL_XBOXKRNL_XBOXKRNL_VIDEO_H_
 #define XENIA_KERNEL_XBOXKRNL_XBOXKRNL_VIDEO_H_
 
-#include "xenia/xbox.h"
+#include "xenia/kernel/kernel.h"
 
 namespace xe {
 namespace kernel {