net/mlx5e: Fix build break when CONFIG_XPS is not set

mlx5e_accel_sk_get_rxq is only used in ktls_rx.c file which already
depends on XPS to be compiled, move it from the generic en_accel.h
header to be local in ktls_rx.c, to fix the below build break

In file included from
../drivers/net/ethernet/mellanox/mlx5/core/en_main.c:49:0:
../drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h:
In function ‘mlx5e_accel_sk_get_rxq’:
../drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h:153:12:
error: implicit declaration of function ‘sk_rx_queue_get’ ...
  int rxq = sk_rx_queue_get(sk);
            ^~~~~~~~~~~~~~~

Fixes: 1182f365 ("net/mlx5e: kTLS, Add kTLS RX HW offload support")
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reported-by: Randy Dunlap <rdunlap@infradead.org>

drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h

@@ -148,16 +148,6 @@ static inline bool mlx5e_accel_tx_finish(struct mlx5e_priv *priv,
 	return true;
 }
 
-static inline int mlx5e_accel_sk_get_rxq(struct sock *sk)
-{
-	int rxq = sk_rx_queue_get(sk);
-
-	if (unlikely(rxq == -1))
-		rxq = 0;
-
-	return rxq;
-}
-
 static inline int mlx5e_accel_init_rx(struct mlx5e_priv *priv)
 {
 	return mlx5e_ktls_init_rx(priv);

drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_rx.c

@@ -547,6 +547,16 @@ void mlx5e_ktls_handle_ctx_completion(struct mlx5e_icosq_wqe_info *wi)
 	queue_work(rule->priv->tls->rx_wq, &rule->work);
 }
 
+static int mlx5e_ktls_sk_get_rxq(struct sock *sk)
+{
+	int rxq = sk_rx_queue_get(sk);
+
+	if (unlikely(rxq == -1))
+		rxq = 0;
+
+	return rxq;
+}
+
 int mlx5e_ktls_add_rx(struct net_device *netdev, struct sock *sk,
 		      struct tls_crypto_info *crypto_info,
 		      u32 start_offload_tcp_sn)
@@ -573,7 +583,7 @@ int mlx5e_ktls_add_rx(struct net_device *netdev, struct sock *sk,
 	priv_rx->crypto_info  =
 		*(struct tls12_crypto_info_aes_gcm_128 *)crypto_info;
 
-	rxq = mlx5e_accel_sk_get_rxq(sk);
+	rxq = mlx5e_ktls_sk_get_rxq(sk);
 	priv_rx->rxq = rxq;
 	priv_rx->sk = sk;