Replace MBEDTLS_MD_CAN_MD5 with PSA_WANT_ALG_MD5

Signed-off-by: Elena Uziunaite <elena.uziunaite@arm.com>
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 3f2973e..b1ae119 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -22,7 +22,7 @@
 #include "psa_util_internal.h"
 #endif
 
-#if defined(MBEDTLS_MD_CAN_MD5)
+#if defined(PSA_WANT_ALG_MD5)
 #include "mbedtls/md5.h"
 #endif
 
@@ -2517,7 +2517,7 @@
     unsigned char sig = MBEDTLS_BYTE_0(sig_alg);
 
     switch (hash) {
-#if defined(MBEDTLS_MD_CAN_MD5)
+#if defined(PSA_WANT_ALG_MD5)
         case MBEDTLS_SSL_HASH_MD5:
             break;
 #endif