brcm2708: add compatible strings

This patch adds the compatible string for the various RPIs from
4.14 upstream.

Note: The 4.14 upstream does not include the compute modules.
If the CM* would just house the SoC, it could in theory use the
"raw" chip compatible string. However, these CM boards also come
with RAM and eMMC. So they have to have a proper comaptible.

For now, "raspberrypi,compute-module-{1|3}" will be good enough.

Note2: The original CM was renamed to CM1 when CM3 was released.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>

target/linux/brcm2708/patches-4.9/960-add-rasbperrypi-compatible.patch

@@ -0,0 +1,70 @@
+--- a/arch/arm/boot/dts/bcm2708-rpi-0-w.dts	2017-12-01 00:09:35.165577128 +0100
++++ b/arch/arm/boot/dts/bcm2708-rpi-0-w.dts	2017-12-01 00:10:02.418981698 +0100
+@@ -4,6 +4,7 @@
+ #include "bcm283x-rpi-smsc9512.dtsi"
+ 
+ / {
++	compatible = "raspberrypi,model-zero-w", "brcm,bcm2835";
+ 	model = "Raspberry Pi Zero W";
+ };
+ 
+--- a/arch/arm/boot/dts/bcm2710-rpi-3-b.dts	2017-12-01 00:23:43.869682792 +0100
++++ b/arch/arm/boot/dts/bcm2710-rpi-3-b.dts	2017-12-01 00:25:07.686338314 +0100
+@@ -8,6 +8,7 @@
+ #include "bcm283x-rpi-smsc9514.dtsi"
+ 
+ / {
++	compatible = "raspberrypi,3-model-b", "brcm,bcm2837", "brcm,bcm2836";
+ 	model = "Raspberry Pi 3 Model B";
+ };
+ 
+--- a/arch/arm/boot/dts/bcm2709-rpi-2-b.dts	2017-12-01 00:24:16.899675426 +0100
++++ b/arch/arm/boot/dts/bcm2709-rpi-2-b.dts	2017-12-01 00:24:53.973005148 +0100
+@@ -4,6 +4,7 @@
+ #include "bcm283x-rpi-smsc9514.dtsi"
+ 
+ / {
++	compatible = "raspberrypi,2-model-b", "brcm,bcm2836";
+ 	model = "Raspberry Pi 2 Model B";
+ };
+ 
+--- a/arch/arm/boot/dts/bcm2708-rpi-b.dts	2017-12-01 00:32:37.426847451 +0100
++++ b/arch/arm/boot/dts/bcm2708-rpi-b.dts	2017-12-01 00:33:22.656955034 +0100
+@@ -4,6 +4,7 @@
+ #include "bcm283x-rpi-smsc9512.dtsi"
+ 
+ / {
++	compatible = "raspberrypi,model-b", "brcm,bcm2835";
+ 	model = "Raspberry Pi Model B";
+ };
+ 
+--- a/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts	2017-12-01 00:34:04.227056139 +0100
++++ b/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts	2017-12-01 00:33:48.953685419 +0100
+@@ -4,6 +4,7 @@
+ #include "bcm283x-rpi-smsc9514.dtsi"
+ 
+ / {
++	compatible = "raspberrypi,model-b-plus", "brcm,bcm2835";
+ 	model = "Raspberry Pi Model B+";
+ };
+ 
+--- a/arch/arm/boot/dts/bcm2708-rpi-cm.dts	2017-12-01 00:21:41.226415322 +0100
++++ b/arch/arm/boot/dts/bcm2708-rpi-cm.dts	2017-12-01 00:21:08.206444802 +0100
+@@ -3,6 +3,7 @@
+ #include "bcm2708-rpi-cm.dtsi"
+ 
+ / {
++	compatible = "raspberrypi,compute-module-1", "brcm,bcm2835";
+ 	model = "Raspberry Pi Compute Module";
+ };
+ 
+--- a/arch/arm/boot/dts/bcm2710-rpi-cm3.dts	2017-12-01 00:40:17.454702202 +0100
++++ b/arch/arm/boot/dts/bcm2710-rpi-cm3.dts	2017-12-01 00:40:10.521349773 +0100
+@@ -3,6 +3,7 @@
+ #include "bcm2710.dtsi"
+ 
+ / {
++	compatible = "raspberrypi,compute-module-3", "brcm,bcm2837", "brcm,bcm2836";
+ 	model = "Raspberry Pi Compute Module 3";
+ };
+