ipc: use device_initcall

... since __initcall is now deprecated.

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/ipc/ipc_sysctl.c b/ipc/ipc_sysctl.c
index 1702864..998d31b 100644
--- a/ipc/ipc_sysctl.c
+++ b/ipc/ipc_sysctl.c
@@ -281,4 +281,4 @@
 	return 0;
 }
 
-__initcall(ipc_sysctl_init);
+device_initcall(ipc_sysctl_init);