payloads/external: Download FILO over HTTPS

Change-Id: I1b44e32505b96978849d39764ff399a502fa6e84
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/17972
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
diff --git a/payloads/external/FILO/Makefile b/payloads/external/FILO/Makefile
index d8c3844..107908d 100644
--- a/payloads/external/FILO/Makefile
+++ b/payloads/external/FILO/Makefile
@@ -3,7 +3,7 @@
 TAG-$(CONFIG_FILO_STABLE)=22baa6bde9339029edfafa421b3d4a7be159edad
 NAME-$(CONFIG_FILO_STABLE)=STABLE
 
-project_git_repo=http://review.coreboot.org/p/filo.git
+project_git_repo=https://review.coreboot.org/p/filo.git
 project_dir=filo
 
 unexport KCONFIG_AUTOHEADER