IPC: Tests addition and updates for PSA FF 1.0

- Tests addition and updates for PSA FF 1.0
- Remove unused platform files
- Update READMEs for security implication note
- Minor bug fixes
diff --git a/api-tests/val/common/val.h b/api-tests/val/common/val.h
index 243c584..c9bcc33 100644
--- a/api-tests/val/common/val.h
+++ b/api-tests/val/common/val.h
@@ -178,6 +178,12 @@
 } test_isolation_level_t;
 
 typedef enum {
+    LEVEL1 = 0x1,
+    LEVEL2,
+    LEVEL3,
+} isolation_level_t;
+
+typedef enum {
     /* VAL uses this boot flag to mark first time boot of the system  */
     BOOT_UNKNOWN                       = 0x1,
     /* VAL/Test uses this boot flag to catch any unwanted system reboot - SIM ERROR Cases*/
diff --git a/api-tests/val/common/val_target.h b/api-tests/val/common/val_target.h
index 415c8f6..b450a33 100644
--- a/api-tests/val/common/val_target.h
+++ b/api-tests/val/common/val_target.h
@@ -103,12 +103,6 @@
 }target_cfg_hdr_t;
 
 typedef enum {
-    LEVEL1 = 0x1,
-    LEVEL2,
-    LEVEL3,
-} firmware_level_t;
-
-typedef enum {
     NOT_AVAILABLE   = 0x0,
     AVAILABLE       = 0x1,
 } is_available_t;
@@ -191,11 +185,9 @@
 
 typedef struct _MISCELLANEOUS_INFO_DESC_ {
     cfg_type_t              cfg_type;
-    firmware_level_t        implemented_psa_firmware_isolation_level;
     addr_t                  ns_start_addr_of_combine_test_binary;
     is_available_t          combine_test_binary_in_ram;
     addr_t                  ns_test_addr;
-    is_available_t          sp_heap_mem_supp;
 } miscellaneous_desc_t;
 
 /*val target config read apis */