arm64: dts: ti: k3-am64-tqma64xxl-mbax4xxl: add chassis-type

Set the "embedded" chassis-type for the MBaX4XxL.
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Link: https://lore.kernel.org/r/55bf14afa377b9bbc1d6c4647895c51c018ae761.1695901360.git.matthias.schiffer@ew.tq-group.comSigned-off-by: Vignesh Raghavendra <vigneshr@ti.com>

arch/arm64/boot/dts/ti/k3-am642-tqma64xxl-mbax4xxl.dts

@@ -19,6 +19,7 @@ / {
 	compatible = "tq,am642-tqma6442l-mbax4xxl", "tq,am642-tqma6442l",
 		     "ti,am642";
 	model = "TQ-Systems TQMa64xxL SoM on MBax4xxL carrier board";
+	chassis-type = "embedded";
 
 	aliases {
 		ethernet0 = &cpsw_port1;