package/wine: host-wine also needs bison and flex

Just like the build of the target wine, the build of host wine also
needs bison and flex, otherwise the build fails with:

checking for flex... no
configure: error: no suitable flex found. Please install the 'flex' package.

(and similarly for bison once host-flex is provided)

This was detected using per-package directories. It used to "work"
because host-wine comes alphabetically after host-flex and host-bison,
which are dependencies of target wine.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>