usb: gadget Move: CONFIG_G_DNL_* to Kconfig

And also reformat defconfigs using "make savedefconfig" rule.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
diff --git a/configs/am437x_gp_evm_defconfig b/configs/am437x_gp_evm_defconfig
index c1b26e0..69f5ac7 100644
--- a/configs/am437x_gp_evm_defconfig
+++ b/configs/am437x_gp_evm_defconfig
@@ -27,3 +27,6 @@
 CONFIG_USB_DWC3_PHY_OMAP=y
 CONFIG_USB_GADGET=y
 CONFIG_USB_GADGET_DOWNLOAD=y
+CONFIG_G_DNL_MANUFACTURER="Texas Instruments"
+CONFIG_G_DNL_VENDOR_NUM=0x0403
+CONFIG_G_DNL_PRODUCT_NUM=0xbd00