arm: dts: k3-j722s-r5-evm: Fix DM2TIFS secproxy thread ID

Fix the DM2TIFS secureproxy thread ID as per the latest TISCI
documentation for J722S.
https://software-dl.ti.com/tisci/esd/latest/5_soc_doc/j722s/sec_proxy.html

Fixes: fc2da3a3d0d3 ("arm: dts: Introduce J722S U-Boot dts files")
Signed-off-by: Vaishnav Achath <vaishnav.a@ti.com>
Signed-off-by: Prasanth Babu Mantena <p-mantena@ti.com>
Reviewed-by: Udit Kumar <u-kumar1@ti.com>
diff --git a/arch/arm/dts/k3-j722s-r5-evm.dts b/arch/arm/dts/k3-j722s-r5-evm.dts
index 5e5c2e3..1bec997 100644
--- a/arch/arm/dts/k3-j722s-r5-evm.dts
+++ b/arch/arm/dts/k3-j722s-r5-evm.dts
@@ -41,8 +41,8 @@
 		ti,host-id = <36>;
 		ti,secure-host;
 		mbox-names = "rx", "tx";
-		mboxes= <&secure_proxy_main 22>,
-			<&secure_proxy_main 23>;
+		mboxes= <&secure_proxy_main 28>,
+			<&secure_proxy_main 29>;
 		bootph-all;
 	};
 };