package/eudev: fix configure options
--enable-libkmod does not exist, but there's --enable-kmod.
Also, add --enable-blkid to the list of options, since we already depend
on it (from util-linux).
Also do not align \ for line continuations.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>