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_wac.c b/drivers/hid/wacom_wac.c
index ce1089f..aee0761 100644
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -808,7 +808,7 @@
 	touch_ring_mode = (data[11] & 0xC0) >> 6;
 
 	for (i = 0; i < WACOM_MAX_REMOTES; i++) {
-		if (remote->serial[i] == serial)
+		if (remote->remotes[i].serial == serial)
 			wacom->led.groups[i].select = touch_ring_mode;
 	}