[LTP] [PATCH] syscalls:epoll01: turn off flooding verbose output

[<cz...@re...>]

It's a small fix, not affecting functions.

epoll01 test put 13000+ lines output, it increases the size of log
file and also make me review the log more difficult. I put a "DEBUG
switch" in the code and make it turned off by default.

Signed-off-by: Caspar Zhang <cz...@re...>
---
 testcases/kernel/syscalls/epoll/epoll-ltp.c |   10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)