ARM: mstar: Add chip level dtsi for SSD202D

Add a chip level dtsi for the SigmaStar SSD202D

Signed-off-by: Daniel Palmer <daniel@0x0f.com>
Link: https://lore.kernel.org/r/20201201134330.3037007-7-daniel@0x0f.com

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Signed-off-by: Arnd Bergmann <arnd@arndb.de>