staging: xillybus: Removed read barrier at beginning of ISR

The comment (also removed) explains why it was there in the first place, but
that doesn't make much sense.

Signed-off-by: Eli Billauer <eli.billauer@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed