[PATCH] dt-bindings: input: mediatek,mt6779-keypad: add the MT8173 keypad

[Ryan Brue]

Hi Dmitry,

Gentle ping on this one. It has an ack from Rob and reviews from Mattijr 
and AngeloGioacchino. The device tree for the Amazon Fire HD 10 (2017) 
that I'm posting for 7.5 uses it for the volume keys. The patch should 
apply to input/next with a three-way merge. I can resend it rebased if 
that's easier.

Thank you, best regards,

Ryan Brue