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/draco_defconfig b/configs/draco_defconfig
index e38030b..de2961b 100644
--- a/configs/draco_defconfig
+++ b/configs/draco_defconfig
@@ -66,8 +66,8 @@
 CONFIG_USB_MUSB_GADGET=y
 CONFIG_USB_STORAGE=y
 CONFIG_USB_GADGET=y
+CONFIG_USB_GADGET_MANUFACTURER="Siemens AG"
+CONFIG_USB_GADGET_VENDOR_NUM=0x0908
+CONFIG_USB_GADGET_PRODUCT_NUM=0x02d2
 CONFIG_USB_GADGET_DOWNLOAD=y
-CONFIG_G_DNL_MANUFACTURER="Siemens AG"
-CONFIG_G_DNL_VENDOR_NUM=0x0908
-CONFIG_G_DNL_PRODUCT_NUM=0x02d2
 CONFIG_USB_ETHER=y