aio: Use __kernel_ulong_t to define aio_context_t

Rather than using "unsigned long" which is ABI-dependent, use
__kernel_ulong_t to define the externally visible type aio_context_t.

Note: the change in this form will cause unsigned long/unsigned int
differences on existing ABIs. If that is unacceptable we may have to
define a new type.

Signed-off-by: H. Peter Anvin <[e-mail]>
Cc: Benjamin LaHaise <[e-mail]>

include/linux/aio_abi.h

···
 #include <linux/types.h>
 #include <asm/byteorder.h>
 
-typedef unsigned long	aio_context_t;
+typedef __kernel_ulong_t aio_context_t;
 
 enum {
 	IOCB_CMD_PREAD = 0,