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/tbs2910_defconfig b/configs/tbs2910_defconfig
index 20814cc..81225e8 100644
--- a/configs/tbs2910_defconfig
+++ b/configs/tbs2910_defconfig
@@ -45,10 +45,10 @@
 CONFIG_USB_KEYBOARD=y
 CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE=y
 CONFIG_USB_GADGET=y
+CONFIG_USB_GADGET_MANUFACTURER="TBS"
+CONFIG_USB_GADGET_VENDOR_NUM=0x0525
+CONFIG_USB_GADGET_PRODUCT_NUM=0xa4a5
 CONFIG_CI_UDC=y
 CONFIG_USB_GADGET_DOWNLOAD=y
-CONFIG_G_DNL_MANUFACTURER="TBS"
-CONFIG_G_DNL_VENDOR_NUM=0x0525
-CONFIG_G_DNL_PRODUCT_NUM=0xa4a5
 CONFIG_CFB_CONSOLE_ANSI=y
 CONFIG_OF_LIBFDT=y