usb: gadget: Make g_dnl USB settings common

The g_dnl USB settings for the vendor ID, product ID and manufacturer are
actually common settings that can and should be shared by all the gadgets.

Make them common by renaming them, and convert all the users.

Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
diff --git a/configs/bcm23550_w1d_defconfig b/configs/bcm23550_w1d_defconfig
index 7091865..49f7e40 100644
--- a/configs/bcm23550_w1d_defconfig
+++ b/configs/bcm23550_w1d_defconfig
@@ -34,11 +34,11 @@
 CONFIG_SYS_NS16550=y
 CONFIG_USB=y
 CONFIG_USB_GADGET=y
+CONFIG_USB_GADGET_MANUFACTURER="Broadcom Corporation"
+CONFIG_USB_GADGET_VENDOR_NUM=0x18d1
+CONFIG_USB_GADGET_PRODUCT_NUM=0x0d02
 CONFIG_USB_GADGET_BCM_UDC_OTG_PHY=y
 CONFIG_USB_GADGET_DWC2_OTG=y
 CONFIG_USB_GADGET_DWC2_OTG_PHY_BUS_WIDTH_8=y
 CONFIG_USB_GADGET_DOWNLOAD=y
-CONFIG_G_DNL_MANUFACTURER="Broadcom Corporation"
-CONFIG_G_DNL_VENDOR_NUM=0x18d1
-CONFIG_G_DNL_PRODUCT_NUM=0x0d02
 CONFIG_OF_LIBFDT=y