Add mbed_lib.json to TF-M SPE

Author: Michael Schwarcz

components/TARGET_PSA/TARGET_TFM/COMPONENT_SPE/mbed_lib.json

@@ -0,0 +1,21 @@
+{
+    "name": "tfm",
+    "config": {
+        "handle_pool_size": {
+            "help": "maximum number of handles that can be opened at the same time",
+            "macro_name": "TFM_CONN_HANDLE_MAX_NUM",
+            "value": 10
+        },
+        "rot_pool_size": {
+            "help": "maximum number of RoT services allowed",
+            "macro_name": "TFM_SPM_MAX_ROT_SERV_NUM",
+            "value": 20
+        },
+        "message_pool_size": {
+            "help": "maximum number of RoT services allowed",
+            "macro_name": "TFM_MSG_QUEUE_MAX_MSG_NUM",
+            "value": 10
+        }
+    }
+}
+