FROMLIST: arm64: dts: qcom: qcs6490-rb3gen2: Add PSCI SYSTEM_RESET2 types

qcs6490-rb3gen2 firmware supports vendor-defined SYSTEM_RESET2 types.
Describe the reset types: "bootloader" will cause device to reboot and
stop in the bootloader's fastboot mode. "edl" will cause device to
reboot into "emergency download mode", which permits loading images via
the Firehose protocol.

Link: https://lore.kernel.org/r/20250303-arm-psci-system_reset2-vendor-reboots-v9-4-b2cf4a20feda@oss.qualcomm.com
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Elliot Berman <elliot.berman@oss.qualcomm.com>

Author: eberman-quic

arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts

@@ -966,6 +966,13 @@
 	status = "okay";
 };
 
+&psci {
+	reset-types {
+		mode-bootloader = <0x10001 0x2>;
+		mode-edl = <0 0x1>;
+	};
+};
+
 &qup_uart7_cts {
 	/*
 	 * Configure a bias-bus-hold on CTS to lower power