XXX workaround forced inclusion of config_psa.h

Don't force inclusion of config_psa.h. This looks like a mistake in
crypto_platform.h so far, as we don't think the config file should be
used unless MBEDTLS_PSA_CRYPTO_CONFIG is set. Investigation is ongoing.

platform/FEATURE_EXPERIMENTAL_API/FEATURE_PSA/TARGET_MBED_PSA_SRV/inc/psa/crypto_platform.h

@@ -41,9 +41,13 @@
 #include MBEDTLS_CONFIG_FILE
 #endif
 
+/* XXX Why force this here? Shouldn't this be included by mbedtls/config.h
+ * already? */
+#if 0
 /* Translate between classic MBEDTLS_xxx feature symbols and PSA_xxx
  * feature symbols. */
 #include "mbedtls/config_psa.h"
+#endif
 
 /* PSA requires several types which C99 provides in stdint.h. */
 #include <stdint.h>