input: goodix - support Goodix gt5688

From what I've seen in vendor trees it's fine to treat this as gt1x¹.
Tested on the Purism Librem 5 Devkit (Rocktech JH057N00900 panel).

[1]: https://github.com/TadiT7/android_kernel_mtk-4.4/tree/master/drivers/input/touchscreen/mediatek/GT5688

This folds in the rest of the patch sent upstream making the number of
touch points probe reliably.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
1 job for goodix in 35 minutes and 37 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build
passed #9562
librem5
build:aarch64

00:35:37