dt-bindings: media: remove nokia,n900-ir as pwm-ir-tx is compatible

The generic pwm-ir-tx driver works for the Nokia n900, so nokia,n900-ir
can be removed.

Acked-by: Conor Dooley <[e-mail]>
Acked-by: Lee Jones <[e-mail]>
Signed-off-by: Sean Young <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>

Documentation/devicetree/bindings/leds/irled/pwm-ir-tx.yaml

···
 
 properties:
   compatible:
-    const: pwm-ir-tx
+    oneOf:
+      - const: pwm-ir-tx
+      - const: nokia,n900-ir
+        deprecated: true
 
   pwms:
     maxItems: 1

Documentation/devicetree/bindings/media/nokia,n900-ir

···
-Device-Tree bindings for LIRC TX driver for Nokia N900(RX51)
-
-Required properties:
-	- compatible: should be "nokia,n900-ir".
-	- pwms: specifies PWM used for IR signal transmission.
-
-Example node:
-
-	pwm9: dmtimer-pwm@9 {
-		compatible = "ti,omap-dmtimer-pwm";
-		ti,timers = <&timer9>;
-		ti,clock-source = <0x00>; /* timer_sys_ck */
-		#pwm-cells = <3>;
-	};
-
-	ir: n900-ir {
-		compatible = "nokia,n900-ir";
-
-		pwms = <&pwm9 0 26316 0>; /* 38000 Hz */
-	};