io_uring: split out open/close operations

Signed-off-by: Jens Axboe <axboe@kernel.dk>

Author: axboe

io_uring/Makefile

@@ -3,5 +3,6 @@
 # Makefile for io_uring
 
 obj-$(CONFIG_IO_URING)		+= io_uring.o xattr.o nop.o fs.o splice.o \
-					sync.o advise.o filetable.o
+					sync.o advise.o filetable.o \
+					openclose.o
 obj-$(CONFIG_IO_WQ)		+= io-wq.o