sh: Fix up hw-breakpoints build for API changes.

The event callback handling has been removed in favour of going through a
generic event handler to handle overflows. Follows the x86 change.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/kernel/hw_breakpoint.c

@@ -302,7 +302,6 @@ int arch_validate_hwbkpt_settings(struct perf_event *bp,
 		return ret;
 	}
 
-	if (bp->callback)
 	ret = arch_store_info(bp);
 
 	if (ret < 0)
@@ -368,7 +367,7 @@ static int __kprobes hw_breakpoint_handler(struct die_args *args)
 			break;
 		}
 
-		(bp->callback)(bp, args->regs);
+		perf_bp_event(bp, args->regs);
 
 		rcu_read_unlock();
 	}