aio-dio-eof-race should be ignored by git

aio-dio-eof-race should be ignored by git

src/aio-dio-regress/aio-dio-eof-race is a binary file built by make.
So it should not be tracked by git.

===============================================================================
$ make clean
...
$ git status
On branch sat-bugfixes
nothing to commit, working directory clean
$ make
...
$ git status
On branch sat-bugfixes
Untracked files:
  (use "git add <file>..." to include in what will be committed)

	src/aio-dio-regress/aio-dio-eof-race
===============================================================================

Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>