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-4.4/0129-bcm2835-implement-channel-map-API.patch

@@ -1,4 +1,4 @@
-From 55349969a1914b515956c14f3fafd25df5c827a9 Mon Sep 17 00:00:00 2001
+From 32cfd4810065c36ad0cb136a47004e4c4c9ed227 Mon Sep 17 00:00:00 2001
 From: wm4 <wm4@nowhere>
 Date: Wed, 13 Jan 2016 19:43:12 +0100
 Subject: [PATCH] bcm2835: implement channel map API