Increase maximum number of SSIDs per scan

With scheduled scan support, we may need to pass more than 10 SSIDs in
a single scan request. Some drivers (e.g., wl12xx) support up to 16
SSIDs at once.

Change WPAS_MAX_SCAN_SSIDS from 10 to 16.

Signed-off-by: Luciano Coelho <coelho@ti.com>

src/drivers/driver.h

@@ -195,7 +195,7 @@ struct wpa_interface_info {
 	const char *drv_name;
 };
 
-#define WPAS_MAX_SCAN_SSIDS 10
+#define WPAS_MAX_SCAN_SSIDS 16
 
 /**
  * struct wpa_driver_scan_params - Scan parameters