HID: wacom: EKR: have one array of struct remotes instead of many arrays

No functional changes, just a prep patch for the one after.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/wacom.h b/drivers/hid/wacom.h
index 110ea67..6b8df67 100644
--- a/drivers/hid/wacom.h
+++ b/drivers/hid/wacom.h
@@ -120,8 +120,10 @@
 	spinlock_t remote_lock;
 	struct kfifo remote_fifo;
 	struct kobject *remote_dir;
-	struct attribute_group remote_group[WACOM_MAX_REMOTES];
-	__u32 serial[WACOM_MAX_REMOTES];
+	struct {
+		struct attribute_group group;
+		u32 serial;
+	} remotes[WACOM_MAX_REMOTES];
 };
 
 struct wacom {