Kernel: Don't directly include <Kernel/Arch/x86/TrapFrame.h>

This adds a new arch-independent header which in turn includes the
correct header for the build architecture.

Kernel/Arch/x86/common/Interrupts.cpp

@@ -30,8 +30,8 @@
 #include <Kernel/Arch/Processor.h>
 #include <Kernel/Arch/RegisterState.h>
 #include <Kernel/Arch/SafeMem.h>
+#include <Kernel/Arch/TrapFrame.h>
 #include <Kernel/Arch/x86/ISRStubs.h>
-#include <Kernel/Arch/x86/TrapFrame.h>
 
 extern FlatPtr start_of_unmap_after_init;
 extern FlatPtr end_of_unmap_after_init;

Kernel/Arch/x86/common/Processor.cpp

@@ -24,10 +24,10 @@
 #include <Kernel/Arch/Processor.h>
 #include <Kernel/Arch/SafeMem.h>
 #include <Kernel/Arch/ScopedCritical.h>
+#include <Kernel/Arch/TrapFrame.h>
 #include <Kernel/Arch/x86/CPUID.h>
 #include <Kernel/Arch/x86/MSR.h>
 #include <Kernel/Arch/x86/ProcessorInfo.h>
-#include <Kernel/Arch/x86/TrapFrame.h>
 
 #include <Kernel/Memory/PageDirectory.h>
 #include <Kernel/Memory/ScopedAddressSpaceSwitcher.h>

Kernel/Arch/x86/i386/InterruptEntry.cpp

@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <Kernel/Arch/TrapFrame.h>
 #include <Kernel/Arch/x86/DescriptorTable.h>
-#include <Kernel/Arch/x86/TrapFrame.h>
 
 // clang-format off
 asm(

Kernel/Arch/x86/i386/Processor.cpp

@@ -6,7 +6,7 @@
 
 #include <AK/StdLibExtras.h>
 #include <Kernel/Arch/Processor.h>
-#include <Kernel/Arch/x86/TrapFrame.h>
+#include <Kernel/Arch/TrapFrame.h>
 #include <Kernel/Process.h>
 #include <Kernel/Random.h>
 #include <Kernel/Scheduler.h>

Kernel/Arch/x86/x86_64/SyscallEntry.cpp

@@ -4,9 +4,9 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <Kernel/Arch/TrapFrame.h>
 #include <Kernel/Arch/x86/DescriptorTable.h>
 #include <Kernel/Arch/x86/Processor.h>
-#include <Kernel/Arch/x86/TrapFrame.h>
 
 extern "C" void syscall_entry();
 extern "C" [[gnu::naked]] void syscall_entry()