Replace MBEDTLS_MD_CAN_SHA256 with PSA_WANT_ALG_SHA_256

Signed-off-by: Elena Uziunaite <elena.uziunaite@arm.com>
diff --git a/programs/fuzz/fuzz_dtlsserver.c b/programs/fuzz/fuzz_dtlsserver.c
index 4343e81..c2dbef8 100644
--- a/programs/fuzz/fuzz_dtlsserver.c
+++ b/programs/fuzz/fuzz_dtlsserver.c
@@ -15,7 +15,7 @@
     defined(MBEDTLS_CTR_DRBG_C) && \
     defined(MBEDTLS_TIMING_C) && \
     (defined(PSA_WANT_ALG_SHA_384) || \
-    defined(MBEDTLS_MD_CAN_SHA256))
+    defined(PSA_WANT_ALG_SHA_256))
 const char *pers = "fuzz_dtlsserver";
 const unsigned char client_ip[4] = { 0x7F, 0, 0, 1 };
 static int initialized = 0;
@@ -34,7 +34,7 @@
     defined(MBEDTLS_CTR_DRBG_C) && \
     defined(MBEDTLS_TIMING_C) && \
     (defined(PSA_WANT_ALG_SHA_384) || \
-    defined(MBEDTLS_MD_CAN_SHA256))
+    defined(PSA_WANT_ALG_SHA_256))
     int ret;
     size_t len;
     mbedtls_ssl_context ssl;