sh: wire up sys_preadv/sys_pwritev() syscalls.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/kernel/syscalls_64.S

@@ -387,3 +387,5 @@ sys_call_table:
 	.long sys_dup3
 	.long sys_pipe2
 	.long sys_inotify_init1		/* 360 */
+	.long sys_preadv
+	.long sys_pwritev