Commit 6a5a4e60373c1386b311b2a8bb666c32d68a9d99 removes the configure of
useSIGIO option:
xfree86 SIGIO support is reworked to use internal versions of
OsBlockSIGIO and OsReleaseSIGIO
The check for useSIGIO is no longer needed.
(From OE-Core rev: 5ed1bc5b4dadc74f1db52179238fbbd145a59043)
Signed-off-by: Tom Hochstein <tom.hochstein@nxp.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>