package/ell: bump to version 0.61
https://git.kernel.org/pub/scm/libs/ell/ell.git/tree/ChangeLog?h=0.61
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit c0275ce343c223c078c770f58bf841f9bcdcab33)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>