arm64: dts: qcom: hamoa: Add the APSS watchdog

The watchdog support in EL1 is SBSA compliant, handled by Gunyah
hypervisor, but in EL2. the watchdog is an instance of the APSS WDT HW
block, same as older platforms. So describe the APSS WDT node and mark
it as reserved, as it will only be enabled in EL2 overlay.

Signed-off-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20251224-arm64-dts-qcom-x1e80100-el2-add-apss-wdt-v3-2-1801c55d2883@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Author: Abel Vesa

arch/arm64/boot/dts/qcom/hamoa.dtsi

@@ -8360,6 +8360,14 @@
 			};
 		};
 
+		apss_watchdog: watchdog@17410000 {
+			compatible = "qcom,apss-wdt-x1e80100", "qcom,kpss-wdt";
+			reg = <0x0 0x17410000 0x0 0x1000>;
+			clocks = <&sleep_clk>;
+			interrupts = <GIC_SPI 0 IRQ_TYPE_EDGE_RISING>;
+			status = "reserved"; /* Reserved by Gunyah */
+		};
+
 		cpucp_mbox: mailbox@17430000 {
 			compatible = "qcom,x1e80100-cpucp-mbox";
 			reg = <0 0x17430000 0 0x10000>, <0 0x18830000 0 0x10000>;