scsi: ufs: phy: dt-bindings: Add QMP UFS PHY compatible for Kaanapali

Document the QMP UFS PHY compatible for Qualcomm Kaanapali to support
physical layer functionality for UFS found on the SoC. Use fallback to
indicate the compatibility of the QMP UFS PHY on the Kaanapali with that
on the SM8750.

Signed-off-by: Jingyi Wang <jingyi.wang@oss.qualcomm.com>
Acked-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>