brcm2708: rename all patches from raspberrypi git tree to use 950 prefix

Right now all brcm2708 patches are extracted from the non-mainline
raspberrypi/linux git tree. Many of them are hacks and/or are unneeded
in LEDE. Raspberry Pi is getting better and better mainline support so
it would be nice to finally start maintaining patches in a cleaner way:
1) Backport patches accepted in upstream tree
2) Start using upstream drivers
3) Pick only these patches that are needed for more complete support

Handling above tasks requires grouping patches - ideally using the same
prefixes as generic ones. It means we should rename existing patches to
use some high prefix. This will allow e.g. use 0xx for backported code.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Stijn Tintel <stijn@linux-ipv6.be>

target/linux/brcm2708/patches-4.9/950-0189-config-add-slcan-kernel-module.patch

@@ -0,0 +1,31 @@
+From 2fd423706eb3afde2a36845488e18d194b18b0c6 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Fri, 27 Jan 2017 18:49:30 +0000
+Subject: [PATCH] config: add slcan kernel module
+
+See: https://github.com/raspberrypi/linux/issues/1819
+---
+ arch/arm/configs/bcm2709_defconfig | 1 +
+ arch/arm/configs/bcmrpi_defconfig  | 1 +
+ 2 files changed, 2 insertions(+)
+
+--- a/arch/arm/configs/bcm2709_defconfig
++++ b/arch/arm/configs/bcm2709_defconfig
+@@ -361,6 +361,7 @@ CONFIG_BAYCOM_SER_HDX=m
+ CONFIG_YAM=m
+ CONFIG_CAN=m
+ CONFIG_CAN_VCAN=m
++CONFIG_CAN_SLCAN=m
+ CONFIG_CAN_MCP251X=m
+ CONFIG_IRDA=m
+ CONFIG_IRLAN=m
+--- a/arch/arm/configs/bcmrpi_defconfig
++++ b/arch/arm/configs/bcmrpi_defconfig
+@@ -357,6 +357,7 @@ CONFIG_BAYCOM_SER_HDX=m
+ CONFIG_YAM=m
+ CONFIG_CAN=m
+ CONFIG_CAN_VCAN=m
++CONFIG_CAN_SLCAN=m
+ CONFIG_CAN_MCP251X=m
+ CONFIG_IRDA=m
+ CONFIG_IRLAN=m