edac: remove arch-specific parameter for the error handler

Remove the arch-dependent parameter, as it were not used,
as the MCE tracepoint weren't implemented. It probably doesn't
make sense to have an MCE-specific tracepoint, as this will
cost more bytes at the tracepoint, and tracepoint is not free.

The changes at the EDAC drivers were done by this small perl script:

	$file .=$_ while (<>);
	$file =~ s/(edac_mc_handle_error)\s*\(([^\;]+)\,([^\,\)]+)\s*\)/$1($2)/g;
	print $file;

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/edac/amd76x_edac.c

@@ -148,7 +148,7 @@ static int amd76x_process_error_info(struct mem_ctl_info *mci,
 			edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci,
 					     mci->csrows[row]->first_page, 0, 0,
 					     row, 0, -1,
-					     mci->ctl_name, "", NULL);
+					     mci->ctl_name, "");
 		}
 	}
 
@@ -163,7 +163,7 @@ static int amd76x_process_error_info(struct mem_ctl_info *mci,
 			edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci,
 					     mci->csrows[row]->first_page, 0, 0,
 					     row, 0, -1,
-					     mci->ctl_name, "", NULL);
+					     mci->ctl_name, "");
 		}
 	}