ARM: dts: uniphier: make compatible of syscon nodes SoC-specific

These hardware blocks are SoC-specific, so their compatible strings
should be SoC-specific as well.  This change has no impact on the
actual behavior since it is controlled by the generic "simple-mfd",
"syscon" compatible strings.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arch/arm/boot/dts/uniphier-sld3.dtsi

@@ -222,7 +222,7 @@ smpctrl@59800000 {
 		};
 
 		mioctrl@59810000 {
-			compatible = "socionext,uniphier-mioctrl",
+			compatible = "socionext,uniphier-sld3-mioctrl",
 				     "simple-mfd", "syscon";
 			reg = <0x59810000 0x800>;
 
@@ -278,7 +278,7 @@ usb3: usb@5a830100 {
 		};
 
 		sysctrl@f1840000 {
-			compatible = "socionext,uniphier-sysctrl",
+			compatible = "socionext,uniphier-sld3-sysctrl",
 				     "simple-mfd", "syscon";
 			reg = <0xf1840000 0x10000>;