ARM: imx_v6_v7_defconfig: add mwifiex driver

Enable Marvell mwifiex driver which is required to drive the
Wi2Wi WM828CC6 wireless module found on Colibri iMX6ULL.
Signed-off-by: NStefan Agner <stefan@agner.ch>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

arch/arm/configs/imx_v6_v7_defconfig

@@ -153,6 +153,9 @@ CONFIG_USB_RTL8152=m
 CONFIG_USB_USBNET=y
 CONFIG_USB_NET_CDC_EEM=m
 CONFIG_BRCMFMAC=m
+CONFIG_MWIFIEX=m
+CONFIG_MWIFIEX_SDIO=m
+CONFIG_MWIFIEX_PCIE=m
 CONFIG_WL12XX=m
 CONFIG_WL18XX=m
 CONFIG_WLCORE_SDIO=m