Add 'submodules=yes' to MAXS components

Every MAXS component now requires the git submodules updated in order to
get build.
Merge branch 'maxs' into 'master'

Add 'submodules=yes' to MAXS components

(Hopefully) fixes the build failure of the latest MAXS version 0.0.1.19: https://f-droid.org/wiki/page/org.projectmaxs.main/lastbuild_24

Please try to rebuild the components after merging. Thank you.

See merge request !346