Input: goodix-berlin - report a resolution of 10 units/mm

Input: goodix-berlin - report a resolution of 10 units/mm

Without a reported resolution, userspace was assuming 1 unit/mm which
is wildly wrong: a regular smartphone is clearly not 2.4 meters tall.
Most applications do not care much for this kind of raw mm value,
but Phosh's on-screen keyboard would accidentally trigger swipe-to-close
gestures due to misinterpreting small movements as huge ones.

Do what the older goodix.c driver does and set the resolution to 10
units/mm to make sure the numbers calculated by userspace are reasonable.

Signed-off-by: Val Packett <val@packett.cool>
Link: https://patch.msgid.link/20260321073242.556253-1-val@packett.cool
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>