We need to pass _GNU_SOURCE and include fcntl.h
Change-Id: Ice0597ddac3b275400880d85793ece4b300bec9b
(From OE-Core rev: 022a96c7a396bd6bbf499984f4ea8639111fe3b7)
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>