staging: wilc1000: make some variables static

terminated_handle is used only in host_interface.c
wilc1000_spi_driver is exported by module_spi_driver()

This fixes a few Sparse warnings.
Signed-off-by: Hugo Camboulive <hugo.camboulive@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/host_interface.c

@@ -225,7 +225,7 @@ struct join_bss_param {
 	u8 start_time[4];
 };
 
-struct host_if_drv *terminated_handle;
+static struct host_if_drv *terminated_handle;
 bool wilc_optaining_ip;
 static u8 P2P_LISTEN_STATE;
 static struct task_struct *hif_thread_handler;

drivers/staging/wilc1000/wilc_spi.c

@@ -153,7 +153,7 @@ static const struct of_device_id wilc1000_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, wilc1000_of_match);
 
-struct spi_driver wilc1000_spi_driver = {
+static struct spi_driver wilc1000_spi_driver = {
 	.driver = {
 		.name = MODALIAS,
 		.of_match_table = wilc1000_of_match,