arm: dts: fix unit-address leading 0s

Fix dtc warnings for 'simple_bus_reg' due to leading 0s. Converted using
the following command:

perl -p -i -e 's/\@0+([0-9a-f])/\@$1/g' `find arch/arm/boot/dts -type -f -name '*.dts*'

Dropped changes to ARM, Ltd. boards LED nodes and manually fixed up some
occurrences of uppercase hex.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/arch/arm/boot/dts/bcm53573.dtsi b/arch/arm/boot/dts/bcm53573.dtsi
index c698a56..16007d7 100644
--- a/arch/arm/boot/dts/bcm53573.dtsi
+++ b/arch/arm/boot/dts/bcm53573.dtsi
@@ -107,7 +107,7 @@
 			gpio-controller;
 			#gpio-cells = <2>;
 
-			uart0: serial@0300 {
+			uart0: serial@300 {
 				compatible = "ns16550a";
 				reg = <0x0300 0x100>;
 				interrupt-parent = <&gic>;