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/corvus_defconfig b/configs/corvus_defconfig
index 705e001..066dc38 100644
--- a/configs/corvus_defconfig
+++ b/configs/corvus_defconfig
@@ -49,9 +49,9 @@
 CONFIG_USB_EHCI_HCD=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_ATMEL_USBA=y
 CONFIG_USB_GADGET_DOWNLOAD=y
-CONFIG_G_DNL_MANUFACTURER="Siemens AG"
-CONFIG_G_DNL_VENDOR_NUM=0x0908
-CONFIG_G_DNL_PRODUCT_NUM=0x02d2
 # CONFIG_EFI_LOADER is not set