arm64: dts: zte: clean up gic-v3 redistributor properties

The gic-v3 property redistributor-stride is only meant as a workaround
for broken platforms that have a redistributor stride deviating what the
architecture defines, i.e. 128KiB for GICv3, 256KiB for GICv4.  This is
not the case for ZX296718, and redistributor-stride is not really
necessary.  Let's drop it.

Also, #redistributor-regions is only required when there is more than
one such region is present.  Let's remove it as well.
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm64/boot/dts/zte/zx296718.dtsi

@@ -239,8 +239,6 @@ gic: interrupt-controller@2a00000 {
 		compatible = "arm,gic-v3";
 		#interrupt-cells = <3>;
 		#address-cells = <0>;
-		#redistributor-regions = <1>;
-		redistributor-stride = <0x20000>;
 		interrupt-controller;
 		reg = <0x02a00000 0x10000>,
 		      <0x02b00000 0xc0000>;