util/futility: Don't echo the warning message unless it fails

Currently, all of the commands for building futility are printed as they
are run.  This change skips printing the check for libcrypto unless the
check actually fails.  This prevents the error from being displayed when
there isn't actually a problem.

Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: I9ef36c0b64f7cd69d19b8faabd165ef6651c838e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62322
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
diff --git a/util/futility/Makefile.inc b/util/futility/Makefile.inc
index 45627a9..6a56deb 100644
--- a/util/futility/Makefile.inc
+++ b/util/futility/Makefile.inc
@@ -16,7 +16,7 @@
 
 .PHONY: check-openssl-presence
 check-openssl-presence:
-	$(HOSTPKGCONFIG) --exists libcrypto || \
+	@$(HOSTPKGCONFIG) --exists libcrypto || \
 	(echo "Error: Ensure that pkg-config and openssl's libcrypto, including header files, are installed."; exit 1)
 
 $(objutil)/futility/futility: $(VBOOT_FUTILITY)