Input: sc27xx - add support for sc2730 and sc2721

Add new compatible strings and match data to support sc2730 and sc2721
which are two varieties of SC27XX family.

Signed-off-by: Nemo Han <nemo.han@unisoc.com>
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Link: https://lore.kernel.org/r/20201117034949.47877-2-zhang.lyra@gmail.com


Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>