ACPICA: Namespace: Add acpi_ns_get_node_unlocked()

ACPICA commit 3ef1a1bf5612fe1a629424c09eaaeb6f299d313c

Add acpi_ns_get_node_unlocked() to be used when ACPI_MTX_NAMESPACE is
locked. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/3ef1a1bf
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Greg White <gwhite@kupulau.com>
Tested-by: Dutch Guy <lucht_piloot@gmx.net>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/acpica/acnamesp.h

@@ -298,6 +298,11 @@ acpi_ns_handle_to_pathname(acpi_handle target_handle,
 u8
 acpi_ns_pattern_match(struct acpi_namespace_node *obj_node, char *search_for);
 
+acpi_status
+acpi_ns_get_node_unlocked(struct acpi_namespace_node *prefix_node,
+			  const char *external_pathname,
+			  u32 flags, struct acpi_namespace_node **out_node);
+
 acpi_status
 acpi_ns_get_node(struct acpi_namespace_node *prefix_node,
 		 const char *external_pathname,