orangepi_zero_defconfig: add xradio wireless driver

Add xradio driver to enable on-board SDIO WiFi chip XR819.

Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

configs/orangepi_zero_defconfig

@@ -30,6 +30,9 @@ BR2_PACKAGE_HOST_GENIMAGE=y
 BR2_PACKAGE_HOST_MTOOLS=y
 BR2_PACKAGE_HOST_UBOOT_TOOLS=y
 
+# wireless driver
+BR2_PACKAGE_XR819_XRADIO=y
+
 # wireless support
 BR2_PACKAGE_IW=y
 BR2_PACKAGE_WIRELESS_TOOLS=y