Update code to work with demos using latest mbedtls version

Author: DakshitBabbar

source/portable/mbedtls/core_pkcs11_mbedtls.c

@@ -93,6 +93,12 @@
  */
     static const char * pNoLowLevelMbedTlsCodeStr = "<No-Low-Level-Code>";
 
+#if defined(MBEDTLS_PSA_CRYPTO_C)
+extern mbedtls_threading_mutex_t mbedtls_threading_key_slot_mutex;
+extern mbedtls_threading_mutex_t mbedtls_threading_psa_globaldata_mutex;
+extern mbedtls_threading_mutex_t mbedtls_threading_psa_rngdata_mutex;
+#endif
+
 /**
  * @brief Utility for converting the high-level code in an mbedTLS error to string,
  * if the code-contains a high-level code; otherwise, using a default string.
@@ -475,6 +481,12 @@ static CK_RV prvMbedTLS_Initialize( void )
     mbedtls_entropy_init( &xP11Context.xMbedEntropyContext );
     mbedtls_ctr_drbg_init( &xP11Context.xMbedDrbgCtx );
 
+    #if defined(MBEDTLS_PSA_CRYPTO_C)
+    mbedtls_mutex_init(&mbedtls_threading_key_slot_mutex);
+    mbedtls_mutex_init(&mbedtls_threading_psa_globaldata_mutex);
+    mbedtls_mutex_init(&mbedtls_threading_psa_rngdata_mutex);
+    #endif
+
     lMbedTLSResult = mbedtls_ctr_drbg_seed( &xP11Context.xMbedDrbgCtx,
                                             mbedtls_entropy_func,
                                             &xP11Context.xMbedEntropyContext,