tls: Add fix for Mbed TLS configuration issue

Until we have a fix for Mbed-TLS/mbedtls#4512,
we need to patch the fix during import time. Otherwise, we run into
linker errors when PSA attempts to use RSA key generation, which we've
excluded.

This patch is extracted from
Mbed-TLS/mbedtls#4513

connectivity/mbedtls/include/mbedtls/config_psa.h

@@ -300,8 +300,10 @@ extern "C" {
 #define MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS 1
 #define PSA_WANT_ALG_RSA_PSS 1
 #endif /* MBEDTLS_PKCS1_V21 */
+#if defined(MBEDTLS_GENPRIME)
 #define MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR 1
 #define PSA_WANT_KEY_TYPE_RSA_KEY_PAIR 1
+#endif /* MBEDTLS_GENPRIME */
 #define MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY 1
 #define PSA_WANT_KEY_TYPE_RSA_PUBLIC_KEY 1
 #endif /* MBEDTLS_RSA_C */