arm64: dts: marvell: armada-37xx: align 'phy-names' of EHCI node with DT schema

According to the 'generic-ehci.yaml' schema, the name of the first phy
in an EHCI node must be "usb", however the 'usb@5e000' node in the
'armada-37xx.dtsi' uses "usb2-utmi-host-phy" instead.

This causes dtbs_check warnings like the following ones:

  arch/arm64/boot/dts/marvell/armada-3720-atlas-v5.dtb: usb@5e000 (marvell,armada-3700-ehci): phy-names:0: 'usb' was expected
      from schema $id: http://devicetree.org/schemas/usb/generic-ehci.yaml
  arch/arm64/boot/dts/marvell/armada-3720-db.dtb: usb@5e000 (marvell,armada-3700-ehci): phy-names:0: 'usb' was expected
      from schema $id: http://devicetree.org/schemas/usb/generic-ehci.yaml
  arch/arm64/boot/dts/marvell/armada-3720-eDPU.dtb: usb@5e000 (marvell,armada-3700-ehci): phy-names:0: 'usb' was expected
      from schema $id: http://devicetree.org/schemas/usb/generic-ehci.yaml
  ...

Use "usb" as a name for the phy to avoid the warnings.

No functional change, the USB interface works after the change:

    [    1.472393] orion-ehci d005e000.usb: EHCI Host Controller
    [    1.477847] orion-ehci d005e000.usb: new USB bus registered, assigned bus number 1
    [    1.487127] orion-ehci d005e000.usb: irq 40, io mem 0xd005e000
    [    1.505759] orion-ehci d005e000.usb: USB 2.0 started, EHCI 1.00
    [    1.512493] hub 1-0:1.0: USB hub found
    [    1.516434] hub 1-0:1.0: 1 port detected
    ...
    [    4.175746] usb 1-1: new high-speed USB device number 2 using orion-ehci
    [    4.347643] usb-storage 1-1:1.0: USB Mass Storage device detected
    [    4.359972] scsi host0: usb-storage 1-1:1.0
    [    5.367100] scsi 0:0:0:0: Direct-Access     ADATA    USB Flash Drive  1.00 PQ: 0 ANSI: 6
    [    5.387091] sd 0:0:0:0: [sda] 30869504 512-byte logical blocks: (15.8 GB/14.7 GiB)
    [    5.398420] sd 0:0:0:0: [sda] Write Protect is off
    [    5.408108] sd 0:0:0:0: [sda] Write cache: disabled, read cache: disabled, doesn't support DPO or FUA
    [    5.477359]  sda: sda1
    [    5.480037] sd 0:0:0:0: [sda] Attached SCSI removable disk

Signed-off-by: Gabor Juhos <[email protected]>
Signed-off-by: Gregory CLEMENT <[email protected]>

Author: juhosg

arch/arm64/boot/dts/marvell/armada-37xx.dtsi

@@ -396,7 +396,7 @@
 				marvell,usb-misc-reg = <&usb2_syscon>;
 				interrupts = <GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>;
 				phys = <&usb2_utmi_host_phy>;
-				phy-names = "usb2-utmi-host-phy";
+				phy-names = "usb";
 				status = "disabled";
 			};