arm64: dts: ti: k3-am65-base-board Use generic camera for node name instead of ov5640

Use camera@ naming for nodes following standard conventions of device
tree (section 2.2.2 Generic Names recommendation in [1]).

[1] https://github.com/devicetree-org/devicetree-specification/tree/v0.3Suggested-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Acked-by: Suman Anna <s-anna@ti.com>
Link: https://lore.kernel.org/r/20200903130015.21361-7-nm@ti.com

arch/arm64/boot/dts/ti/k3-am654-base-board.dts

@@ -257,7 +257,7 @@ &main_i2c1 {
 	pinctrl-0 = <&main_i2c1_pins_default>;
 	clock-frequency = <400000>;
 
-	ov5640@3c {
+	ov5640: camera@3c {
 		compatible = "ovti,ov5640";
 		reg = <0x3c>;