[source] uboot-envtools: add Arduino Yun support

[LEDE Commits]

pepe2k pushed a commit to source.git, branch master:
https://git.lede-project.org/bdd3c948729569d2128fbe158eb62d58cd32cf16

commit bdd3c948729569d2128fbe158eb62d58cd32cf16
Author: Camille Bilodeau <camille.bilodeau at protonmail.com>
AuthorDate: Tue Jun 13 10:33:34 2017 +0200

    uboot-envtools: add Arduino Yun support
    
    Signed-off-by: Camille Bilodeau <camille.bilodeau at protonmail.com>
---
 package/boot/uboot-envtools/files/ar71xx | 1 +
 1 file changed, 1 insertion(+)

diff --git a/package/boot/uboot-envtools/files/ar71xx b/package/boot/uboot-envtools/files/ar71xx
index b920bb9..503e593 100644
--- a/package/boot/uboot-envtools/files/ar71xx
+++ b/package/boot/uboot-envtools/files/ar71xx
@@ -19,6 +19,7 @@ a60|\
 alfa-ap120c|\
 all0258n|\
 ap90q|\
+arduino-yun|\
 cap324|\
 cap4200ag|\
 carambola2|\