arm64: dts: apple: Add chassis-type property for Apple iMacs

Apple iMac (M1, 2021) are all-in-one devices with an integrated display.

Signed-off-by: Janne Grunau <j@jannau.net>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Reviewed-by: Mark Kettenis <kettenis@openbsd.org>
Link: https://patch.msgid.link/20260109-apple-dt-chassis-type-v1-4-c215503734c5@jannau.net
Signed-off-by: Sven Peter <sven@kernel.org>

Author: jannau

arch/arm64/boot/dts/apple/t8103-j456.dts

@@ -15,6 +15,7 @@
 / {
 	compatible = "apple,j456", "apple,t8103", "apple,arm-platform";
 	model = "Apple iMac (24-inch, 4x USB-C, M1, 2021)";
+	chassis-type = "all-in-one";
 
 	aliases {
 		ethernet0 = &ethernet0;

arch/arm64/boot/dts/apple/t8103-j457.dts

@@ -15,6 +15,7 @@
 / {
 	compatible = "apple,j457", "apple,t8103", "apple,arm-platform";
 	model = "Apple iMac (24-inch, 2x USB-C, M1, 2021)";
+	chassis-type = "all-in-one";
 
 	aliases {
 		ethernet0 = &ethernet0;