Add CONFIG_RFKILL

Change-Id: I0fcae0a92ac4a233cbb0f58e9156e91c3497915e
diff --git a/defconfig b/defconfig
index 4c710b5..1249226 100644
--- a/defconfig
+++ b/defconfig
@@ -40,6 +40,7 @@
 # CONFIG_WLAN_UDP_RESPONSE_OFFLOAD is not set
 # CONFIG_WLAN_WOW_PULSE is not set
 # CONFIG_DPTRACE_ENABLE is not set
+CONFIG_RFKILL=y
 
 CONFIG_I2C=y
 CONFIG_I2C_CHARDEV=y