ASoC: dt: Move RT5640 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>

Documentation/devicetree/bindings/sound/nvidia,tegra-audio-rt5640.txt

@@ -11,29 +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 RT5640's pins, and the jacks on the board:
-
-  RT5640 pins:
-
-  * DMIC1
-  * DMIC2
-  * MICBIAS1
-  * IN1P
-  * IN1R
-  * IN2P
-  * IN2R
-  * HPOL
-  * HPOR
-  * LOUTL
-  * LOUTR
-  * MONOP
-  * MONON
-  * SPOLP
-  * SPOLN
-  * SPORP
-  * SPORN
-
-  Board connectors:
+  sinks are the RT5640's pins (as documented in its binding), and the jacks
+  on the board:
 
   * Headphones
   * Speakers

Documentation/devicetree/bindings/sound/rt5640.txt

@@ -18,6 +18,26 @@ Optional properties:
 
 - realtek,ldo1-en-gpios : The GPIO that controls the CODEC's LDO1_EN pin.
 
+Pins on the device (for linking into audio routes):
+
+  * DMIC1
+  * DMIC2
+  * MICBIAS1
+  * IN1P
+  * IN1R
+  * IN2P
+  * IN2R
+  * HPOL
+  * HPOR
+  * LOUTL
+  * LOUTR
+  * MONOP
+  * MONON
+  * SPOLP
+  * SPOLN
+  * SPORP
+  * SPORN
+
 Example:
 
 rt5640 {