crypto: sa2ul - Select CRYPTO_AUTHENC

The sa2ul driver uses crypto_authenc_extractkeys and therefore
must select CRYPTO_AUTHENC.

Fixes: 7694b6ca ("crypto: sa2ul - Add crypto driver")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/Kconfig

@@ -873,6 +873,7 @@ config CRYPTO_DEV_SA2UL
 	select CRYPTO_AES
 	select CRYPTO_AES_ARM64
 	select CRYPTO_ALGAPI
+	select CRYPTO_AUTHENC
 	select HW_RANDOM
 	select SG_SPLIT
 	help