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/secure_fw/services/initial_attestation/attestation_key.h b/secure_fw/services/initial_attestation/attestation_key.h
index e9f3916..94c1d7e 100644
--- a/secure_fw/services/initial_attestation/attestation_key.h
+++ b/secure_fw/services/initial_attestation/attestation_key.h
@@ -8,8 +8,8 @@
 #ifndef __ATTESTATION_KEY_H__
 #define __ATTESTATION_KEY_H__
 
-#include "psa_initial_attestation_api.h"
-#include "psa_crypto.h"
+#include "psa/initial_attestation.h"
+#include "psa/crypto.h"
 
 #ifdef __cplusplus
 extern "C" {