ASoC: dt: Move WM8903 pin list from Tegra board binding to CODEC binding

The pin list is the same for any board using the CODEC.
Signed-off-by: Mark Brown <broonie@linaro.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>

Documentation/devicetree/bindings/sound/nvidia,tegra-audio-wm8903.txt

@@ -11,28 +11,8 @@ Required properties:
 - nvidia,audio-routing : A list of the connections between audio components.
   Each entry is a pair of strings, the first being the connection's sink,
   the second being the connection's source. Valid names for sources and
-  sinks are the WM8903's pins, and the jacks on the board:
-
-  WM8903 pins:
-
-  * IN1L
-  * IN1R
-  * IN2L
-  * IN2R
-  * IN3L
-  * IN3R
-  * DMICDAT
-  * HPOUTL
-  * HPOUTR
-  * LINEOUTL
-  * LINEOUTR
-  * LOP
-  * LON
-  * ROP
-  * RON
-  * MICBIAS
-
-  Board connectors:
+  sinks are the WM8903's pins (documented in the WM8903 binding document),
+  and the jacks on the board:
 
   * Headphone Jack
   * Int Spk

Documentation/devicetree/bindings/sound/wm8903.txt

@@ -28,6 +28,25 @@ Optional properties:
     performed. If any entry has the value 0xffffffff, that GPIO's
     configuration will not be modified.
 
+Pins on the device (for linking into audio routes):
+
+  * IN1L
+  * IN1R
+  * IN2L
+  * IN2R
+  * IN3L
+  * IN3R
+  * DMICDAT
+  * HPOUTL
+  * HPOUTR
+  * LINEOUTL
+  * LINEOUTR
+  * LOP
+  * LON
+  * ROP
+  * RON
+  * MICBIAS
+
 Example:
 
 codec: wm8903@1a {