Replace MBEDTLS_MD_CAN_SHA256 with PSA_WANT_ALG_SHA_256

Signed-off-by: Elena Uziunaite <elena.uziunaite@arm.com>
diff --git a/programs/x509/cert_write.c b/programs/x509/cert_write.c
index 0b2575e..8c10498 100644
--- a/programs/x509/cert_write.c
+++ b/programs/x509/cert_write.c
@@ -14,12 +14,12 @@
 #if !defined(MBEDTLS_X509_CRT_WRITE_C) || \
     !defined(MBEDTLS_X509_CRT_PARSE_C) || !defined(MBEDTLS_FS_IO) || \
     !defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_CTR_DRBG_C) || \
-    !defined(MBEDTLS_ERROR_C) || !defined(MBEDTLS_MD_CAN_SHA256) || \
+    !defined(MBEDTLS_ERROR_C) || !defined(PSA_WANT_ALG_SHA_256) || \
     !defined(MBEDTLS_PEM_WRITE_C) || !defined(MBEDTLS_MD_C)
 int main(void)
 {
     mbedtls_printf("MBEDTLS_X509_CRT_WRITE_C and/or MBEDTLS_X509_CRT_PARSE_C and/or "
-                   "MBEDTLS_FS_IO and/or MBEDTLS_MD_CAN_SHA256 and/or "
+                   "MBEDTLS_FS_IO and/or PSA_WANT_ALG_SHA_256 and/or "
                    "MBEDTLS_ENTROPY_C and/or MBEDTLS_CTR_DRBG_C and/or "
                    "MBEDTLS_ERROR_C not defined.\n");
     mbedtls_exit(0);