arm64: dts: qcom: milos-fairphone-fp6: Add vibrator support

arm64: dts: qcom: milos-fairphone-fp6: Add vibrator support

Add the required node for haptic playback (Awinic AW86938)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Griffin Kroah-Hartman <griffin.kroah@fairphone.com>
Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Link: https://lore.kernel.org/r/20260403-aw86938-driver-v5-1-0712909df423@fairphone.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>