SST: Rename SST(Secure STorage) to PS(Protected Storage)

This patches renames SST(Secure STorage) to
PS(Protected Storage) for files, folders and any contents
in files to align with the PSA Storage API spec.

Change-Id: Icf991f59512875780c159f22737b521b3b2d4924
Signed-off-by: Kevin Peng <kevin.peng@arm.com>
diff --git a/interface/src/tfm_sst_func_api.c b/interface/src/tfm_ps_func_api.c
similarity index 91%
rename from interface/src/tfm_sst_func_api.c
rename to interface/src/tfm_ps_func_api.c
index 77a466e..d3c53a4 100644
--- a/interface/src/tfm_sst_func_api.c
+++ b/interface/src/tfm_ps_func_api.c
@@ -25,7 +25,7 @@
     };
 
     status = tfm_ns_interface_dispatch(
-                                  (veneer_fn)tfm_tfm_sst_set_req_veneer,
+                                  (veneer_fn)tfm_tfm_ps_set_req_veneer,
                                   (uint32_t)in_vec,  IOVEC_LEN(in_vec),
                                   (uint32_t)NULL, 0);
 
@@ -60,7 +60,7 @@
     }
 
     status = tfm_ns_interface_dispatch(
-                                  (veneer_fn)tfm_tfm_sst_get_req_veneer,
+                                  (veneer_fn)tfm_tfm_ps_get_req_veneer,
                                   (uint32_t)in_vec,  IOVEC_LEN(in_vec),
                                   (uint32_t)out_vec, IOVEC_LEN(out_vec));
 
@@ -82,7 +82,7 @@
     };
 
     status = tfm_ns_interface_dispatch(
-                                  (veneer_fn)tfm_tfm_sst_get_info_req_veneer,
+                                  (veneer_fn)tfm_tfm_ps_get_info_req_veneer,
                                   (uint32_t)in_vec,  IOVEC_LEN(in_vec),
                                   (uint32_t)out_vec, IOVEC_LEN(out_vec));
 
@@ -97,7 +97,7 @@
     };
 
     status = tfm_ns_interface_dispatch(
-                                  (veneer_fn)tfm_tfm_sst_remove_req_veneer,
+                                  (veneer_fn)tfm_tfm_ps_remove_req_veneer,
                                   (uint32_t)in_vec,  IOVEC_LEN(in_vec),
                                   (uint32_t)NULL, 0);
 
@@ -138,7 +138,7 @@
     };
 
     (void)tfm_ns_interface_dispatch(
-                               (veneer_fn)tfm_tfm_sst_get_support_req_veneer,
+                               (veneer_fn)tfm_tfm_ps_get_support_req_veneer,
                                (uint32_t)NULL,  0,
                                (uint32_t)out_vec, IOVEC_LEN(out_vec));
 
diff --git a/interface/src/tfm_sst_ipc_api.c b/interface/src/tfm_ps_ipc_api.c
similarity index 92%
rename from interface/src/tfm_sst_ipc_api.c
rename to interface/src/tfm_ps_ipc_api.c
index 4130428..7cc3a63 100644
--- a/interface/src/tfm_sst_ipc_api.c
+++ b/interface/src/tfm_ps_ipc_api.c
@@ -26,7 +26,7 @@
         { .base = &create_flags, .len = sizeof(create_flags) }
     };
 
-    handle = psa_connect(TFM_SST_SET_SID, TFM_SST_SET_VERSION);
+    handle = psa_connect(TFM_PS_SET_SID, TFM_PS_SET_VERSION);
     if (!PSA_HANDLE_IS_VALID(handle)) {
         return PSA_ERROR_GENERIC_ERROR;
     }
@@ -69,7 +69,7 @@
         return PSA_ERROR_INVALID_ARGUMENT;
     }
 
-    handle = psa_connect(TFM_SST_GET_SID, TFM_SST_GET_VERSION);
+    handle = psa_connect(TFM_PS_GET_SID, TFM_PS_GET_VERSION);
     if (!PSA_HANDLE_IS_VALID(handle)) {
         return PSA_ERROR_GENERIC_ERROR;
     }
@@ -98,7 +98,7 @@
         { .base = p_info, .len = sizeof(*p_info) }
     };
 
-    handle = psa_connect(TFM_SST_GET_INFO_SID, TFM_SST_GET_INFO_VERSION);
+    handle = psa_connect(TFM_PS_GET_INFO_SID, TFM_PS_GET_INFO_VERSION);
     if (!PSA_HANDLE_IS_VALID(handle)) {
         return PSA_ERROR_GENERIC_ERROR;
     }
@@ -121,7 +121,7 @@
     };
 
 
-    handle = psa_connect(TFM_SST_REMOVE_SID, TFM_SST_REMOVE_VERSION);
+    handle = psa_connect(TFM_PS_REMOVE_SID, TFM_PS_REMOVE_VERSION);
     if (!PSA_HANDLE_IS_VALID(handle)) {
         return PSA_ERROR_GENERIC_ERROR;
     }
@@ -170,7 +170,7 @@
     /* The PSA API does not return an error, so any error from TF-M is
      * ignored.
      */
-    handle = psa_connect(TFM_SST_GET_SUPPORT_SID, TFM_SST_GET_SUPPORT_VERSION);
+    handle = psa_connect(TFM_PS_GET_SUPPORT_SID, TFM_PS_GET_SUPPORT_VERSION);
     if (!PSA_HANDLE_IS_VALID(handle)) {
         return support_flags;
     }