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

Impact: While being at it: statics do not need to be initialized with 0.

Fix this sparse warnings:
  drivers/net/atlx/atl1.c:109:1: warning: incorrect type in initializer (different signedness)
  drivers/net/atlx/atl2.c:2870:1: warning: incorrect type in initializer (different signedness)
  drivers/net/atlx/atl2.c:2880:1: warning: incorrect type in initializer (different signedness)
  drivers/net/atlx/atl2.c:2894:1: warning: incorrect type in initializer (different signedness)
  drivers/net/atlx/atl2.c:2904:1: warning: incorrect type in initializer (different signedness)
  drivers/net/atlx/atl2.c:2913:1: warning: incorrect type in initializer (different signedness)
Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Acked-by: Jay Cliburn <jcliburn@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/atlx/atl1.c

@@ -105,7 +105,7 @@
  * Default Value: 100 (200us)
  */
 static int __devinitdata int_mod_timer[ATL1_MAX_NIC+1] = ATL1_PARAM_INIT;
-static int num_int_mod_timer;
+static unsigned int num_int_mod_timer;
 module_param_array_named(int_mod_timer, int_mod_timer, int,
 	&num_int_mod_timer, 0);
 MODULE_PARM_DESC(int_mod_timer, "Interrupt moderator timer");

drivers/net/atlx/atl2.c

@@ -2854,7 +2854,7 @@ static void atl2_force_ps(struct atl2_hw *hw)
 #else
 #define ATL2_PARAM(X, desc) \
     static int __devinitdata X[ATL2_MAX_NIC+1] = ATL2_PARAM_INIT; \
-    static int num_##X = 0; \
+    static unsigned int num_##X; \
     module_param_array_named(X, X, int, &num_##X, 0); \
     MODULE_PARM_DESC(X, desc);
 #endif