hwmon: (hp-wmi-sensors) Get WMI instance count from WMI driver core

Commit 2a2b13ae ("platform/x86: wmi: Allow retrieving the number of
WMI object instances") means we no longer need to find this ourselves.
Signed-off-by: James Seo <james@equiv.tech>
Link: https://lore.kernel.org/r/20230722172513.9324-2-james@equiv.techSigned-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/hp-wmi-sensors.c

@@ -435,25 +435,11 @@ static union acpi_object *hp_wmi_get_wobj(const char *guid, u8 instance)
 /* hp_wmi_wobj_instance_count - find count of WMI object instances */
 static u8 hp_wmi_wobj_instance_count(const char *guid)
 {
-	u8 hi = HP_WMI_MAX_INSTANCES;
-	union acpi_object *wobj;
-	u8 lo = 0;
-	u8 mid;
-
-	while (lo < hi) {
-		mid = (lo + hi) / 2;
-
-		wobj = hp_wmi_get_wobj(guid, mid);
-		if (!wobj) {
-			hi = mid;
-			continue;
-		}
+	int count;
 
-		lo = mid + 1;
-		kfree(wobj);
-	}
+	count = wmi_instance_count(guid);
 
-	return lo;
+	return clamp(count, 0, (int)HP_WMI_MAX_INSTANCES);
 }
 
 static int check_wobj(const union acpi_object *wobj,