schemas: legacy: add Renesas RAA228006 device

Add RAA228006 to PSUSensor types enum.

Change-Id: I7c4bceaaea4e72b58c1000a58e8cf9f7e66e2763
Signed-off-by: Leo Yang <Leo-Yang@quantatw.com>
diff --git a/schemas/legacy.json b/schemas/legacy.json
index fef69e1..0ed34b8 100644
--- a/schemas/legacy.json
+++ b/schemas/legacy.json
@@ -949,6 +949,7 @@
                         "PXE1610",
                         "RAA228000",
                         "RAA228004",
+                        "RAA228006",
                         "RAA228228",
                         "RAA228620",
                         "RAA229001",