Faults: Turn off arch/faults.hh

Because there are no longer architecture independent but specialized functions
in arch/XXX/faults.hh, code that isn't using the faults from a particular ISA
no longer needs to be able to include them through the switching header file
arch/faults.hh. By removing that header file (arch/faults.hh), the potential
interface between ISA code and non ISA code is narrowed.

src/cpu/ozone/cpu_impl.hh

@@ -30,7 +30,6 @@
  */
 
 #include "arch/alpha/osfpal.hh"
-#include "arch/faults.hh"
 #include "arch/isa_traits.hh" // For MachInst
 #include "arch/kernel_stats.hh"
 #include "arch/tlb.hh"

src/cpu/ozone/lsq_unit.hh

@@ -35,13 +35,13 @@
 #include <map>
 #include <queue>
 
-#include "arch/faults.hh"
 #include "arch/types.hh"
 #include "base/hashmap.hh"
 #include "config/the_isa.hh"
 #include "cpu/inst_seq.hh"
 #include "mem/mem_interface.hh"
 //#include "mem/page_table.hh"
+#include "sim/fault_fwd.hh"
 #include "sim/sim_object.hh"
 
 class PageTable;

src/cpu/ozone/lsq_unit_impl.hh

@@ -28,10 +28,10 @@
  * Authors: Kevin Lim
  */
 
-#include "arch/faults.hh"
 #include "base/str.hh"
 #include "config/the_isa.hh"
 #include "cpu/ozone/lsq_unit.hh"
+#include "sim/fault_fwd.hh"
 
 template <class Impl>
 OzoneLSQ<Impl>::StoreCompletionEvent::StoreCompletionEvent(int store_idx,

src/cpu/ozone/lw_lsq.hh

@@ -36,7 +36,6 @@
 #include <map>
 #include <queue>
 
-#include "arch/faults.hh"
 #include "arch/types.hh"
 #include "base/fast_alloc.hh"
 #include "base/hashmap.hh"
@@ -46,6 +45,7 @@
 #include "mem/port.hh"
 //#include "mem/page_table.hh"
 #include "sim/debug.hh"
+#include "sim/fault_fwd.hh"
 #include "sim/sim_object.hh"
 
 class MemObject;

src/cpu/ozone/lw_lsq_impl.hh

@@ -28,12 +28,12 @@
  * Authors: Kevin Lim
  */
 
-#include "arch/faults.hh"
 #include "base/str.hh"
 #include "config/the_isa.hh"
 #include "config/use_checker.hh"
 #include "cpu/checker/cpu.hh"
 #include "cpu/ozone/lw_lsq.hh"
+#include "sim/fault_fwd.hh"
 
 template<class Impl>
 OzoneLWLSQ<Impl>::WritebackEvent::WritebackEvent(DynInstPtr &_inst, PacketPtr _pkt,