dt-bindings: phy: samsung,usb3-drd-phy: Add Exynos850 support

Document Exynos850 compatible. USB 2.0 DRD PHY on Exynos850 has two
clocks (ref and phy), which is already described in bindings.

Signed-off-by: Sam Protsenko <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: Sam Protsenko

Documentation/devicetree/bindings/phy/samsung,usb3-drd-phy.yaml

@@ -29,6 +29,7 @@ properties:
       - samsung,exynos5420-usbdrd-phy
       - samsung,exynos5433-usbdrd-phy
       - samsung,exynos7-usbdrd-phy
+      - samsung,exynos850-usbdrd-phy
 
   clocks:
     minItems: 2