MIPS: mscc: ocelot: make HSIO registers address range a syscon

HSIO contains registers for PLL5 configuration, SerDes/switch port
muxing and a thermal sensor, hence we can't keep it in the switch DT
node.
Acked-by: Paul Burton <paul.burton@mips.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/mips/boot/dts/mscc/ocelot.dtsi

@@ -107,7 +107,6 @@ switch@1010000 {
 			reg = <0x1010000 0x10000>,
 			      <0x1030000 0x10000>,
 			      <0x1080000 0x100>,
-			      <0x10d0000 0x10000>,
 			      <0x11e0000 0x100>,
 			      <0x11f0000 0x100>,
 			      <0x1200000 0x100>,
@@ -121,10 +120,10 @@ switch@1010000 {
 			      <0x1280000 0x100>,
 			      <0x1800000 0x80000>,
 			      <0x1880000 0x10000>;
-			reg-names = "sys", "rew", "qs", "hsio", "port0",
-				    "port1", "port2", "port3", "port4", "port5",
-				    "port6", "port7", "port8", "port9", "port10",
-				    "qsys", "ana";
+			reg-names = "sys", "rew", "qs", "port0", "port1",
+				    "port2", "port3", "port4", "port5", "port6",
+				    "port7", "port8", "port9", "port10", "qsys",
+				    "ana";
 			interrupts = <21 22>;
 			interrupt-names = "xtr", "inj";
 
@@ -231,5 +230,10 @@ mdio1: mdio@10700c0 {
 			pinctrl-0 = <&miim1>;
 			status = "disabled";
 		};
+
+		hsio: syscon@10d0000 {
+			compatible = "mscc,ocelot-hsio", "syscon", "simple-mfd";
+			reg = <0x10d0000 0x10000>;
+		};
 	};
 };