ARM: configs: at91_dt: enable ARC4 crypto alg

Required for WEP , Wi-Fi

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>

Author: ehristev

arch/arm/configs/at91_dt_defconfig

@@ -238,6 +238,7 @@ CONFIG_NLS_ISO8859_1=y
 CONFIG_NLS_UTF8=y
 CONFIG_CRYPTO_CCM=y
 CONFIG_CRYPTO_GCM=y
+CONFIG_CRYPTO_ARC4=y
 CONFIG_CRYPTO_USER_API_HASH=m
 CONFIG_CRYPTO_USER_API_SKCIPHER=m
 # CONFIG_CRYPTO_HW is not set