ARM: imx_v6_v7_defconfig: Enable USB_ANNOUNCE_NEW_DEVICES

This is very helpful debugging USB issues.
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Andreas Müller <schnitzeltony@gmail.com>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/configs/imx_v6_v7_defconfig

@@ -308,6 +308,7 @@ CONFIG_SND_SOC_WM8962=y
 CONFIG_SND_SIMPLE_CARD=y
 CONFIG_HID_MULTITOUCH=y
 CONFIG_USB=y
+CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_EHCI_MXC=y
 CONFIG_USB_STORAGE=y