Merge pull request #49 from scateu/patch-1

Update test.c: fix typo 'SHA_TEST' --> "TEST_SHA'

firmware/tests/tests.c

@@ -301,7 +301,7 @@ void run_tests()
 {
 	int rc;
 
-#ifdef SHA_TEST
+#ifdef TEST_SHA
 	PRINT("--- STARTING SHA TEST ---\r\n");
 	rc = test_sha();
 	if (rc == 0)