Fix instances of old feature macros being used

sed -i -f md.sed include/mbedtls/ssl.h library/hmac_drbg.c programs/pkey/*.c programs/x509/*.c tests/scripts/generate_pkcs7_tests.py tests/suites/test_suite_random.data

Then manually revert programs/pkey/ecdsa.c as it's using a low-level
hash API.

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/library/hmac_drbg.c b/library/hmac_drbg.c
index b157302..af205aa 100644
--- a/library/hmac_drbg.c
+++ b/library/hmac_drbg.c
@@ -510,7 +510,7 @@
 
 #if defined(MBEDTLS_SELF_TEST)
 
-#if !defined(MBEDTLS_SHA1_C)
+#if !defined(MBEDTLS_MD_CAN_SHA1)
 /* Dummy checkup routine */
 int mbedtls_hmac_drbg_self_test(int verbose)
 {
@@ -639,7 +639,7 @@
 
     return 0;
 }
-#endif /* MBEDTLS_SHA1_C */
+#endif /* MBEDTLS_MD_CAN_SHA1 */
 #endif /* MBEDTLS_SELF_TEST */
 
 #endif /* MBEDTLS_HMAC_DRBG_C */