Blackfin: hook up new perf_counter_open syscall

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S
index 31fa313..5a4e7c7 100644
--- a/arch/blackfin/mach-common/entry.S
+++ b/arch/blackfin/mach-common/entry.S
@@ -1609,6 +1609,7 @@
 	.long _sys_preadv
 	.long _sys_pwritev
 	.long _sys_rt_tgsigqueueinfo
+	.long _sys_perf_counter_open
 
 	.rept NR_syscalls-(.-_sys_call_table)/4
 	.long _sys_ni_syscall