brcm2708: update linux 4.4 patches to latest version

As usual these patches were extracted and rebased from the raspberry pi repo:
https://github.com/raspberrypi/linux/tree/rpi-4.4.y

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

target/linux/brcm2708/patches-4.4/0082-scripts-dtc-Add-overlay-support.patch

@@ -1,4 +1,4 @@
-From cd035dbd2c541ab1f517f79d6b7c54948a91ed8b Mon Sep 17 00:00:00 2001
+From 546cd6ad07064b850fe069f84e28da11526cbc3f Mon Sep 17 00:00:00 2001
 From: Phil Elwell <phil@raspberrypi.org>
 Date: Tue, 14 Jul 2015 17:00:18 +0100
 Subject: [PATCH] scripts/dtc: Add overlay support