ext: oberon: Backport legacy + PSA fix

This fixes an issue in nrf_security which allows
to support PSA APIs with Oberon PSA core when
legacy mbedTLS APIs are used.

Signed-off-by: Georgios Vasilakis <georgios.vasilakis@nordicsemi.no>

Author: Vge0rge

ext/oberon/psa/core/include/psa/crypto_extra.h

@@ -2123,7 +2123,6 @@ static inline void psa_pake_cs_set_key_confirmation(
     cipher_suite->key_confirmation = key_confirmation;
 }
 
-
 #ifdef __cplusplus
 }
 #endif

ext/oberon/psa/core/library/common.h

@@ -23,6 +23,16 @@
 #ifndef MBEDTLS_LIBRARY_COMMON_H
 #define MBEDTLS_LIBRARY_COMMON_H
 
+/* This covers a corner case which needs PSA and Legacy crypto APIs at the same time */
+#ifdef CONFIG_NRF_SECURITY_LEGACY_AND_PSA
+#define MBEDTLS_PSA_CRYPTO_DRIVERS    // Needed for the driver wrappers
+#define MBEDTLS_PSA_CRYPTO_STORAGE_C  // Needed for supporting ITS
+#define PSA_ACCEL_GENERATE_RANDOM     // Kconfigs for PSA_NEED_* not used so manually enable it RNG
+#define PSA_ACCEL_GET_ENTROPY
+#define PSA_NEED_CC3XX_CTR_DRBG_DRIVER
+#include "oberon_config.h"            // The PSA_NEED symbols used from this file when not using Kconfigs
+#endif
+
 #include "mbedtls/build_info.h"
 #include "alignment.h"