misc: Remove include of arch/page_size.hh, and fix up includes.

Remove the only remaining use of arch/page_size.hh, and fix up a couple
files which were using one of the constants defined in a specific arch
version of it without including the file they needed directly.

Change-Id: I6da5638ca10c788bd42197f4f5180e6b66f7b87f
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/50765
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>

src/arch/arm/system.hh

@@ -46,6 +46,7 @@
 #include <unordered_map>
 #include <vector>
 
+#include "arch/arm/page_size.hh"
 #include "kern/linux/events.hh"
 #include "params/ArmSystem.hh"
 #include "sim/full_system.hh"

src/arch/riscv/pagetable_walker.cc

@@ -53,6 +53,7 @@
 #include <memory>
 
 #include "arch/riscv/faults.hh"
+#include "arch/riscv/page_size.hh"
 #include "arch/riscv/pagetable.hh"
 #include "arch/riscv/tlb.hh"
 #include "base/bitfield.hh"

src/dev/arm/generic_timer.cc

@@ -39,6 +39,7 @@
 
 #include <cmath>
 
+#include "arch/arm/page_size.hh"
 #include "arch/arm/system.hh"
 #include "arch/arm/utility.hh"
 #include "base/logging.hh"

src/gpu-compute/gpu_compute_driver.cc

@@ -35,6 +35,7 @@
 
 #include <memory>
 
+#include "arch/x86/page_size.hh"
 #include "base/compiler.hh"
 #include "base/logging.hh"
 #include "base/trace.hh"

src/sim/system.hh

@@ -48,7 +48,6 @@
 #include <utility>
 #include <vector>
 
-#include "arch/page_size.hh"
 #include "base/loader/memory_image.hh"
 #include "base/loader/symtab.hh"
 #include "base/statistics.hh"