Interface: Rename PSA headers

Renames PSA headers from psa_<api>.h to psa/<api>.h.

Change-Id: I3fc552c39f9a7e6d54e7a7a2f82f076bd03d30a7
Signed-off-by: Jamie Fox <jamie.fox@arm.com>
diff --git a/platform/ext/common/tfm_initial_attestation_key_material.c b/platform/ext/common/tfm_initial_attestation_key_material.c
index f60521a..afcd8ee 100644
--- a/platform/ext/common/tfm_initial_attestation_key_material.c
+++ b/platform/ext/common/tfm_initial_attestation_key_material.c
@@ -91,7 +91,7 @@
 
 /* Hash (SHA256) of initial attestation public key.
  * Byte string representation of ECC public key according to
- * psa_export_public_key() in interface/include/psa_crypto.h:
+ * psa_export_public_key() in interface/include/psa/crypto.h:
  * 0x04 || X_coord || Y_coord
  */
 TFM_LINK_SET_RO_IN_PARTITION_SECTION("TFM_SP_INITIAL_ATTESTATION")
diff --git a/platform/ext/target/musca_b1/services/src/tfm_platform_system.c b/platform/ext/target/musca_b1/services/src/tfm_platform_system.c
index be11acd..07425d7 100644
--- a/platform/ext/target/musca_b1/services/src/tfm_platform_system.c
+++ b/platform/ext/target/musca_b1/services/src/tfm_platform_system.c
@@ -10,7 +10,7 @@
 #include "platform_description.h"
 #include "target_cfg.h"
 #include "device_definition.h"
-#include "psa_client.h"
+#include "psa/client.h"
 #include "tfm_secure_api.h"
 #include "services/include/tfm_ioctl_api.h"
 
@@ -113,4 +113,3 @@
             return TFM_PLATFORM_ERR_NOT_SUPPORTED;
     }
 }
-
diff --git a/platform/include/tfm_platform_system.h b/platform/include/tfm_platform_system.h
index c248fe5..c297d3b 100644
--- a/platform/include/tfm_platform_system.h
+++ b/platform/include/tfm_platform_system.h
@@ -12,7 +12,7 @@
  *       target.
  */
 
-#include "psa_client.h"
+#include "psa/client.h"
 #include "tfm_plat_defs.h"
 #include "tfm_platform_api.h"