Recommend an ARM cross-compiler

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Reviewed-by: Guillaume Desmottes <guillaume.desmottes@collabora.co.uk>
Differential Revision: https://phabricator.apertis.org/D5258

debian/control

@@ -16,5 +16,6 @@ Depends:
  ${pythons3:Depends},
  python3-argcomplete,
  python3-xdg,
+Recommends: gcc-arm-linux-gnueabihf
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  debugging applications