Add PCIeSlots schemas to the BMC

We plan on using these schemas, add them to the allow list.

Tested: Code generated.

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: I4d2cc4d580115bbaf2445469577940984e3045f0
diff --git a/scripts/update_schemas.py b/scripts/update_schemas.py
index 01531c8..af62962 100755
--- a/scripts/update_schemas.py
+++ b/scripts/update_schemas.py
@@ -69,6 +69,7 @@
     'PCIeFunction',
     'PCIeFunctionCollection',
     'PhysicalContext',
+    'PCIeSlots',
     'Power',
     'Privileges',  # Used in Role
     'Processor',