openamp: remote: change platform allow to filter

change paltform allow to filter in align with the main
core application

Signed-off-by: Hake Huang <hake.huang@oss.nxp.com>

Author: hakehuang

samples/subsys/ipc/openamp/remote/sample.yaml

@@ -3,9 +3,7 @@ sample:
   name: OpenAMP example integration (remote)
 tests:
   sample.ipc.openamp.remote:
-    platform_allow:
-      - lpcxpresso54114/lpc54114/m0
-      - lpcxpresso55s69/lpc55s69/cpu1
+    filter: dt_chosen_enabled("zephyr,ipc") and dt_chosen_enabled("zephyr,ipc_shm")
     integration_platforms:
       - lpcxpresso54114/lpc54114/m0
     tags: ipm