arm64: dts: toshiba: tmpv7708: Align node names with DT bindings

DT bindings expect node names to follow certain pattern, dtbs_check
warnings:

  tmpv7708-rm-mbrc.dtb: pmux@24190000 (toshiba,tmpv7708-pinctrl):
    'pwm_mux' does not match any of the regexes: '-pins$', '^pinctrl-[0-9]+$'
  tmpv7708-rm-mbrc.dtb pmux@24190000 (toshiba,tmpv7708-pinctrl):
    $nodename:0: 'pmux@24190000' does not match '^(pinctrl|pinmux)(@[0-9a-f]+)?$'
  tmpv7708-rm-mbrc.dtb: wdt@28330000 (toshiba,visconti-wdt):
    $nodename:0: 'wdt@28330000' does not match '^(timer|watchdog)(@.*|-([0-9]|[1-9][0-9]+))?$'

Reviewed-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.x90@mail.toshiba>
Link: https://patch.msgid.link/20251022133616.74492-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

Author: krzk

arch/arm64/boot/dts/toshiba/tmpv7708.dtsi

@@ -161,7 +161,7 @@
 			      <0 0x24006000 0 0x2000>;
 		};
 
-		pmux: pmux@24190000 {
+		pmux: pinctrl@24190000 {
 			compatible = "toshiba,tmpv7708-pinctrl";
 			reg = <0 0x24190000 0 0x10000>;
 		};
@@ -463,7 +463,7 @@
 			status = "disabled";
 		};
 
-		wdt: wdt@28330000 {
+		wdt: watchdog@28330000 {
 			compatible = "toshiba,visconti-wdt";
 			reg = <0 0x28330000 0 0x1000>;
 			clocks = <&pismu TMPV770X_CLK_WDTCLK>;

arch/arm64/boot/dts/toshiba/tmpv7708_pins.dtsi

@@ -91,7 +91,7 @@
 		bias-pull-up;
 	};
 
-	pwm_mux: pwm_mux {
+	pwm_mux: pwm-pins {
 		function = "pwm";
 	};