a23: add Ippo Q8H-v5

This is a 7 inch Q8 format tablet with Allwinner A23.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
a13: add HSG H702

This is a 7 inch Q8 format tablet with Allwinner A13.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>