drivers/net/atl1e: fix sparse warnings: fix signedness

Fix this sparse warnings:
  drivers/net/atl1e/atl1e_main.c:716:39: warning: incorrect type in argument 2 (different signedness)
  drivers/net/atl1e/atl1e_param.c:57:1: warning: incorrect type in initializer (different signedness)
  drivers/net/atl1e/atl1e_param.c:68:1: warning: incorrect type in initializer (different signedness)
  drivers/net/atl1e/atl1e_param.c:81:1: warning: incorrect type in initializer (different signedness)
  drivers/net/atl1e/atl1e_param.c:92:1: warning: incorrect type in initializer (different signedness)
Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/atl1e/atl1e.h

@@ -448,7 +448,7 @@ struct atl1e_adapter {
 	/* All Descriptor memory */
 	dma_addr_t  	ring_dma;
 	void     	*ring_vir_addr;
-	int             ring_size;
+	u32             ring_size;
 
 	struct atl1e_tx_ring tx_ring;
 	struct atl1e_rx_ring rx_ring;

drivers/net/atl1e/atl1e_param.c

@@ -41,7 +41,7 @@
 
 #define ATL1E_PARAM(x, desc) \
 	static int __devinitdata x[ATL1E_MAX_NIC + 1] = ATL1E_PARAM_INIT; \
-	static int num_##x; \
+	static unsigned int num_##x; \
 	module_param_array_named(x, x, int, &num_##x, 0); \
 	MODULE_PARM_DESC(x, desc);