hwspinlock/core: use global ID to register hwspinlocks on multiple devices

Commit 300bab9770 (hwspinlock/core: register a bank of hwspinlocks in a
single API call, 2011-09-06) introduced 'hwspin_lock_register_single()'
to register numerous (a bank of) hwspinlock instances in a single API,

At which time, 'hwspin_lock_register()' accidentally passes 'local IDs'
to 'hwspin_lock_register_single()', despite that ..._single() requires
'global IDs' to register hwspinlocks.

We have to convert into global IDs by supplying the missing 'base_id'.

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
[ohad: fix error path of hwspin_lock_register, too]
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
diff --git a/drivers/hwspinlock/hwspinlock_core.c b/drivers/hwspinlock/hwspinlock_core.c
index 61c9cf1..1201a15 100644
--- a/drivers/hwspinlock/hwspinlock_core.c
+++ b/drivers/hwspinlock/hwspinlock_core.c
@@ -345,7 +345,7 @@
 		hwlock->bank = bank;
-		ret = hwspin_lock_register_single(hwlock, i);
+		ret = hwspin_lock_register_single(hwlock, base_id + i);
 		if (ret)
 			goto reg_failed;
@@ -354,7 +354,7 @@
 	while (--i >= 0)
-		hwspin_lock_unregister_single(i);
+		hwspin_lock_unregister_single(base_id + i);
 	return ret;