Service: Add the "model" attribute to manifest file

The "model" attribute is required for psa_framework_version 1.1
manifest file.

Change-Id: Ia1440399e6dd62d18af001f009cb98e40da90393
Signed-off-by: Shawn Shan <Shawn.Shan@arm.com>
diff --git a/secure_fw/partitions/tfm_ffm11_partition/tfm_ffm11_partition.yaml b/secure_fw/partitions/tfm_ffm11_partition/tfm_ffm11_partition.yaml
index abe0253..9efdd7c 100644
--- a/secure_fw/partitions/tfm_ffm11_partition/tfm_ffm11_partition.yaml
+++ b/secure_fw/partitions/tfm_ffm11_partition/tfm_ffm11_partition.yaml
@@ -10,6 +10,7 @@
   "name": "TFM_SP_FFM11",
   "type": "APPLICATION-ROT",
   "priority": "NORMAL",
+  "model": "IPC",
   "entry_point": "tfm_ffm11_partition_main",
   "stack_size": "0x200",
   "services": [