sim, x86: Replace EventWrapper use with EventFunctionWrapper

Change-Id: Ie1df07b70776208fc3631a73d403024636fc05a9
Signed-off-by: Sean Wilson <spwilson2@wisc.edu>
Reviewed-on: https://gem5-review.googlesource.com/3749
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-by: Anthony Gutierrez <anthony.gutierrez@amd.com>
Maintainer: Anthony Gutierrez <anthony.gutierrez@amd.com>

src/arch/x86/pagetable_walker.hh

@@ -178,7 +178,7 @@ namespace X86ISA
         /**
          * Event used to call startWalkWrapper.
          **/
-        EventWrapper<Walker, &Walker::startWalkWrapper> startWalkWrapperEvent;
+        EventFunctionWrapper startWalkWrapperEvent;
 
         // Functions for dealing with packets.
         bool recvTimingResp(PacketPtr pkt);
@@ -205,7 +205,7 @@ namespace X86ISA
             funcState(this, NULL, NULL, true), tlb(NULL), sys(params->system),
             masterId(sys->getMasterId(name())),
             numSquashable(params->num_squash_per_cycle),
-            startWalkWrapperEvent(this)
+            startWalkWrapperEvent([this]{ startWalkWrapper(); }, name())
         {
         }
     };