riscv: dts: sifive: "fix" pmic watchdog node name

After converting the pmic watchdog binding to yaml, dtbs_check complains
that the node name doesn't match the binding. "Fix" it.

Reviewed-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Conor Dooley <[email protected]>
Reviewed-by: Heiko Stuebner <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Palmer Dabbelt <[email protected]>

Author: ConchuOD

arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts

@@ -90,7 +90,7 @@
 			compatible = "dlg,da9063-rtc";
 		};
 
-		wdt {
+		watchdog {
 			compatible = "dlg,da9063-watchdog";
 		};