HooToo HT-TM05 and RAVPower RP-WD03 have almost identical hardware
(except for RAM size) and are from the same vendor (SunValley).
Create a common DTSI file for them.
Suggested-by: Russell Morris <rmorris@rkmorris.us>
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>