Replace MBEDTLS_ECP_HAVE_SECP224R1 with PSA_WANT_ECC_SECP_R1_224

Signed-off-by: Elena Uziunaite <elena.uziunaite@arm.com>
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index cb284ad..5dd3256 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -6261,7 +6261,7 @@
 #if defined(MBEDTLS_ECP_HAVE_BP256R1)
     { 26, MBEDTLS_ECP_DP_BP256R1, PSA_ECC_FAMILY_BRAINPOOL_P_R1, 256 },
 #endif
-#if defined(MBEDTLS_ECP_HAVE_SECP224R1)
+#if defined(PSA_WANT_ECC_SECP_R1_224)
     { 21, MBEDTLS_ECP_DP_SECP224R1, PSA_ECC_FAMILY_SECP_R1, 224 },
 #endif
 #if defined(MBEDTLS_ECP_HAVE_SECP224K1)