ail: explicitly add dependencies

ail: explicitly add dependencies

This prevents ail build from failing. It is not clear why explicit
dependencies to libslp-db-util and xdgmime are required for the target
build since those dependencies are already present in the recipe (for
both native and target builds).
This issue is similar to the one with vconf: BTY-14.

This commit is linked to commit
0057842c1783a4eda1b507dbea6e82223bda7048.

Change-Id: I1b546884b95eb668927dccf8dd90fab7410144bd
Signed-off-by: Kévin THIERRY <kevin.thierry@open.eurogiciel.org>