staging: wilc1000: replace u32 with int

The data type of variable i changes u32 to int.
It is used as array index to print debug message so that it is better to
use data type of int.
Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/host_interface.c

@@ -3215,7 +3215,7 @@ int host_int_add_ptk(struct host_if_drv *hif_drv, const u8 *ptk,
 	int result = 0;
 	struct host_if_msg msg;
 	u8 u8KeyLen = ptk_key_len;
-	u32 i;
+	int i;
 
 	if (!hif_drv) {
 		PRINT_ER("driver is null\n");