FROMLIST: arm64: dts: qcom: talos: Add psci reboot-modes

Add PSCI SYSTEM_RESET2 reboot-modes for talos based boards, for use by
the psci_reboot_mode driver.

The following modes are defined:
- bootloader: reboot into fastboot mode for fastboot flashing.
- edl: reboot into emergency download mode for image loading via
  the Firehose protocol.

Support for these modes is firmware dependent.

Signed-off-by: Song Xue <quic_songxue@quicinc.com>
Signed-off-by: Shivendra Pratap <shivendra.pratap@oss.qualcomm.com>
Signed-off-by: Xin Liu <xin.liu@oss.qualcomm.com>
Link: https://lore.kernel.org/all/20260304-arm-psci-system_reset2-vendor-reboots-v20-10-cf7d346b8372@oss.qualcomm.com/

Author: Shivendra Pratap

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

@@ -625,6 +625,11 @@
 					      &cluster_sleep_1
 					      &cluster_sleep_2>;
 		};
+
+		reboot-mode {
+			mode-bootloader = <0x80010001 0x2>;
+			mode-edl = <0x80000000 0x1>;
+		};
 	};
 
 	reserved-memory {