dt-bindings: input: Add Awinic AW86927

Add bindings for the Awinic AW86927 haptic chip which can be found in
smartphones.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Griffin Kroah-Hartman <griffin.kroah@fairphone.com>
Link: https://lore.kernel.org/r/20250925-aw86927-v3-1-1fc6265b42de@fairphone.com


Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>