vfs: do bulk POLL* -> EPOLL* replacement

This is the mindless scripted replacement of kernel use of POLL*
variables as described by Al, done by this script:

    for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
        L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
        for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
    done

with de-mangling cleanups yet to come.

NOTE! On almost all architectures, the EPOLL* constants have the same
values as the POLL* constants do.  But they keyword here is "almost".
For various bad reasons they aren't the same, and epoll() doesn't
actually work quite correctly in some cases due to this on Sparc et al.

The next patch from Al will sort out the final differences, and we
should be all done.

Scripted-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/char/xillybus/xillybus_core.c

@@ -1758,15 +1758,15 @@ static __poll_t xillybus_poll(struct file *filp, poll_table *wait)
 
 		spin_lock_irqsave(&channel->wr_spinlock, flags);
 		if (!channel->wr_empty || channel->wr_ready)
-			mask |= POLLIN | POLLRDNORM;
+			mask |= EPOLLIN | EPOLLRDNORM;
 
 		if (channel->wr_hangup)
 			/*
-			 * Not POLLHUP, because its behavior is in the
-			 * mist, and POLLIN does what we want: Wake up
+			 * Not EPOLLHUP, because its behavior is in the
+			 * mist, and EPOLLIN does what we want: Wake up
 			 * the read file descriptor so it sees EOF.
 			 */
-			mask |=  POLLIN | POLLRDNORM;
+			mask |=  EPOLLIN | EPOLLRDNORM;
 		spin_unlock_irqrestore(&channel->wr_spinlock, flags);
 	}
 
@@ -1781,12 +1781,12 @@ static __poll_t xillybus_poll(struct file *filp, poll_table *wait)
 
 		spin_lock_irqsave(&channel->rd_spinlock, flags);
 		if (!channel->rd_full)
-			mask |= POLLOUT | POLLWRNORM;
+			mask |= EPOLLOUT | EPOLLWRNORM;
 		spin_unlock_irqrestore(&channel->rd_spinlock, flags);
 	}
 
 	if (channel->endpoint->fatal_error)
-		mask |= POLLERR;
+		mask |= EPOLLERR;
 
 	return mask;
 }