* Use "pkg-config --variable=udevdir udev" to fix udevdir, otherwise it
would use ${libdir}/udev which is incorrect for systemd's udev.
(From OE-Core rev: bcd93a4ad1188bb15db00727d5d03548d687a7a3)
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>