consolidate the compat fcntl definitions

[Arnd Bergmann]

On Tue, Jan 11, 2022 at 9:35 AM Christoph Hellwig <hch at lst.de> wrote:
>
> Hi all,
>
> currenty the compat fcnt definitions are duplicate for all compat
> architectures, and the native fcntl64 definitions aren't even usable
> from userspace due to a bogus CONFIG_64BIT ifdef.  This series tries
> to sort out all that.

The changes look good, but I have the same comment on your last patch that
I had for Guo Ren's version. Once we have resolved that, I can apply the
series in the asm-generic tree, or provide an Ack to have it all merged
along with the compat mode changes in the risc-v tree.

       Arnd