gre: add empty install rules for grev4 & grev6
authorAlexandru Ardelean <ardeleanalex@gmail.com>
Tue, 8 Nov 2016 14:26:47 +0000 (16:26 +0200)
committerJo-Philipp Wich <jo@mein.io>
Thu, 22 Dec 2016 15:33:27 +0000 (16:33 +0100)
commit5ab258e57a5342160cf6c225c265828efd52cee4
tree3cf6217c7688ce4548113d01bf5800f9279beaa4
parent6c82f8a4833144ad54a204e002867330f5d3b071
gre: add empty install rules for grev4 & grev6

Build seems to fail with:

```
Collected errors:
 * satisfy_dependencies_for: Cannot satisfy the following dependencies for X:
 * grev4 *
 * opkg_install_cmd: Cannot install package X
```

After adding an empty install rule, the failure goes away.

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>
package/network/config/gre/Makefile