Use more secure HTTPS URLs for coreboot sites

The coreboot sites support HTTPS, and requests over HTTP with SSL are
also redirected. So use the more secure URLs, which also saves a
request most of the times, as nothing needs to be redirected.

Run the command below to replace all occurences.

```
$ git grep -l -E 'http://(www.|review.|)coreboot.org'
| xargs sed -i 's,http://\(.*\)coreboot.org,https://\1coreboot.org,g'
```

Change-Id: If53f8b66f1ac72fb1a38fa392b26eade9963c369
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: https://review.coreboot.org/20034
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/payloads/external/GRUB2/Kconfig.name b/payloads/external/GRUB2/Kconfig.name
index c3a8ddffe6..cf23cf8ea9 100644
--- a/payloads/external/GRUB2/Kconfig.name
+++ b/payloads/external/GRUB2/Kconfig.name
@@ -5,4 +5,4 @@ config PAYLOAD_GRUB2
 	  with a GRUB2 payload. If you don't know what this is
 	  about, just leave it enabled.
 
-	  See http://coreboot.org/Payloads for more information.
+	  See https://coreboot.org/Payloads for more information.