configs: mt8518: enable usb gadget driver

Enable board_late_init and usb gadget for mt8518

Signed-off-by: mingming lee <mingming.lee@mediatek.com>

configs/mt8518_ap1_emmc_defconfig

@@ -9,6 +9,7 @@ CONFIG_NR_DRAM_BANKS=1
 CONFIG_FIT=y
 CONFIG_FIT_SIGNATURE=y
 CONFIG_DEFAULT_FDT_FILE="mt8518-ap1-emmc.dtb"
+CONFIG_BOARD_LATE_INIT=y
 CONFIG_SYS_PROMPT="MT8518> "
 CONFIG_CMD_BOOTMENU=y
 CONFIG_CMD_MMC=y
@@ -27,6 +28,15 @@ CONFIG_DM_SERIAL=y
 CONFIG_MTK_SERIAL=y
 CONFIG_TIMER=y
 CONFIG_MTK_TIMER=y
+CONFIG_USB=y
+CONFIG_DM_USB=y
+CONFIG_USB_MUSB_GADGET=y
+CONFIG_USB_MUSB_MT85XX=y
+CONFIG_USB_GADGET=y
+CONFIG_USB_GADGET_MANUFACTURER="Mediatek."
+CONFIG_USB_GADGET_VENDOR_NUM=0x0bb4
+CONFIG_USB_GADGET_PRODUCT_NUM=0x0c01
+CONFIG_USB_GADGET_DOWNLOAD=y
 CONFIG_WDT=y
 CONFIG_WDT_MTK=y
 CONFIG_LZ4=y