manifest: Update hal_nxp to fix net_mgmt event integer type change

The hal_nxp is using net_mgmt API which has changed the event
type from uint32_t to uint64_t.

Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>

Author: jukkar

west.yml

@@ -210,7 +210,7 @@ manifest:
       groups:
         - hal
     - name: hal_nxp
-      revision: 8f72ba5e6769a04f5016c3260e828c846ffe461a
+      revision: pull/551/head
       path: modules/hal/nxp
       groups:
         - hal