arm64: defconfig: Enable RZ/V2M xHCI and USB3.1 DRD controller support

Increase build and test coverage by enabling RZ/V2M xHCI and USB3.1 DRD
controller support.

Note that the latter cannot be modular, as USB_XHCI_RCAR is builtin.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/ff10d09c1a00f7024679a249e696e8c8a52d671e.1678286291.git.geert+renesas@glider.be

arch/arm64/configs/defconfig

@@ -909,6 +909,7 @@ CONFIG_USB=y
 CONFIG_USB_OTG=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_PCI_RENESAS=m
+CONFIG_USB_XHCI_RZV2M=y
 CONFIG_USB_XHCI_TEGRA=y
 CONFIG_USB_BRCMSTB=m
 CONFIG_USB_EHCI_HCD=y
@@ -944,6 +945,7 @@ CONFIG_USB_ONBOARD_HUB=m
 CONFIG_NOP_USB_XCEIV=y
 CONFIG_USB_GADGET=y
 CONFIG_USB_RENESAS_USBHS_UDC=m
+CONFIG_USB_RZV2M_USB3DRD=y
 CONFIG_USB_RENESAS_USB3=m
 CONFIG_USB_TEGRA_XUDC=m
 CONFIG_USB_CONFIGFS=m