BCM270X_DT: Also set coherent_pool=1M for BT Pis

See: #2924

Signed-off-by: Phil Elwell <[email protected]>

Author: Phil Elwell

arch/arm/boot/dts/bcm2708-rpi-0-w.dts

@@ -7,7 +7,7 @@
 	model = "Raspberry Pi Zero W";
 
 	chosen {
-		bootargs = "8250.nr_uarts=1";
+		bootargs = "coherent_pool=1M 8250.nr_uarts=1";
 	};
 
 	aliases {

arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts

@@ -8,7 +8,7 @@
 	model = "Raspberry Pi 3 Model B+";
 
 	chosen {
-		bootargs = "8250.nr_uarts=1";
+		bootargs = "coherent_pool=1M 8250.nr_uarts=1";
 	};
 
 	aliases {

arch/arm/boot/dts/bcm2710-rpi-3-b.dts

@@ -8,7 +8,7 @@
 	model = "Raspberry Pi 3 Model B";
 
 	chosen {
-		bootargs = "8250.nr_uarts=1";
+		bootargs = "coherent_pool=1M 8250.nr_uarts=1";
 	};
 
 	aliases {