Fix configuration for accelerated jpake

Signed-off-by: Przemek Stekiel <przemyslaw.stekiel@mobica.com>
diff --git a/include/mbedtls/config_psa.h b/include/mbedtls/config_psa.h
index 48b2d32..f7de6d1 100644
--- a/include/mbedtls/config_psa.h
+++ b/include/mbedtls/config_psa.h
@@ -147,12 +147,15 @@
 #endif
 
 #if defined(PSA_WANT_ALG_JPAKE)
+#if !defined(MBEDTLS_PSA_ACCEL_ALG_JPAKE)
 #define MBEDTLS_PSA_BUILTIN_PAKE 1
 #define MBEDTLS_PSA_BUILTIN_ALG_JPAKE 1
 #define MBEDTLS_ECP_DP_SECP256R1_ENABLED
 #define MBEDTLS_BIGNUM_C
 #define MBEDTLS_ECP_C
 #define MBEDTLS_ECJPAKE_C
+#define MBEDTLS_SHA256_C
+#endif /* MBEDTLS_PSA_ACCEL_ALG_JPAKE */
 #endif /* PSA_WANT_ALG_JPAKE */
 
 #if defined(PSA_WANT_ALG_RIPEMD160) && !defined(MBEDTLS_PSA_ACCEL_ALG_RIPEMD160)