dt-bindings: mfd: qcom: pm8xxx: Add pm8901 compatible

Add missing compatible for the pm8901 model used in msm8660
such as (HP TouchPad (tenderloin).

Signed-off-by: Herman van Hazendonk <github.com@herrie.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20240415123038.1526386-1-github.com@herrie.org


Signed-off-by: Lee Jones <lee@kernel.org>