dsp: fix compilation issue in dynamic load/unload BT modules

Compilation issue addressed in failure case to load
num_modules.

Change-Id: Ieb923074a71f4ddc4c8da379b1169a06ce9267b6

dsp/q6afe.c

@@ -281,7 +281,7 @@ static int q6afe_load_avcs_modules(int num_modules, u16 port_id,
 	struct avcs_load_unload_modules_sec_payload sec_payload;
 
 	if (num_modules <= 0) {
-		pr_err("%s: Invalid number of modules to load\n");
+		pr_err("%s: Invalid number of modules to load\n", __func__);
 		return -EINVAL;
 	}