riscv: dts: canaan: fix bus {ranges,reg} warnings

The k210 devicetrees warn about missing/empty reg and/or ranges
properties:
arch/riscv/boot/dts/canaan/k210.dtsi:408.22-460.5: Warning (unit_address_vs_reg): /soc/bus@52000000: node has a unit name, but no reg or ranges property
arch/riscv/boot/dts/canaan/k210.dtsi:352.22-406.5: Warning (simple_bus_reg): /soc/bus@50400000: missing or empty reg/ranges property

Add a ranges properties that naively caps the buses after the
allocation of their last devices.
Tested-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220705215213.1802496-12-mail@conchuod.ieSigned-off-by: Palmer Dabbelt <palmer@rivosinc.com>

arch/riscv/boot/dts/canaan/k210.dtsi

@@ -163,7 +163,7 @@ apb0: bus@50200000 {
 			#address-cells = <1>;
 			#size-cells = <1>;
 			compatible = "simple-pm-bus";
-			ranges;
+			ranges = <0x50200000 0x50200000 0x200000>;
 			clocks = <&sysclk K210_CLK_APB0>;
 
 			gpio1: gpio@50200000 {
@@ -382,7 +382,7 @@ apb1: bus@50400000 {
 			#address-cells = <1>;
 			#size-cells = <1>;
 			compatible = "simple-pm-bus";
-			ranges;
+			ranges = <0x50400000 0x50400000 0x40100>;
 			clocks = <&sysclk K210_CLK_APB1>;
 
 			wdt0: watchdog@50400000 {
@@ -437,7 +437,7 @@ apb2: bus@52000000 {
 			#address-cells = <1>;
 			#size-cells = <1>;
 			compatible = "simple-pm-bus";
-			ranges;
+			ranges = <0x52000000 0x52000000 0x2000200>;
 			clocks = <&sysclk K210_CLK_APB2>;
 
 			spi0: spi@52000000 {