configs: riscv: starfive: Add VF2 PCIe USB3 XHCI support

Add XHCI_PCI to enable usb3-host functions.
Also add usb command and keyboard config.

Signed-off-by: Minda Chen <minda.chen@starfivetech.com>

configs/starfive_visionfive2_defconfig

@@ -65,6 +65,7 @@ CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS=5
 CONFIG_CMD_MEMINFO=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_PCI=y
+CONFIG_CMD_USB=y
 CONFIG_CMD_TFTPPUT=y
 CONFIG_OF_BOARD=y
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
@@ -111,3 +112,7 @@ CONFIG_PINCTRL_STARFIVE=y
 CONFIG_SYS_NS16550=y
 CONFIG_CADENCE_QSPI=y
 CONFIG_TIMER_EARLY=y
+CONFIG_USB=y
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_XHCI_PCI=y
+CONFIG_USB_KEYBOARD=y