ARM: dts: lan966x: Add UDPHS support

Add UDPHS (the USB High Speed Device Port controller) support.

The both lan966x SOCs (LAN9662 and LAN9668) have the same UDPHS
IP. This IP is also the same as the one present in the SAMA5D3
SOC.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220704102845.168438-4-herve.codina@bootlin.com