ASoC: dt-bindings: add mclk support to cs42l51

Add clocks properties to cs42l51 Cirrus codec,
to support master clock provider.
Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/cs42l51.txt

+CS42L51 audio CODEC
+
+Optional properties:
+
+  - clocks : a list of phandles + clock-specifiers, one for each entry in
+    clock-names
+
+  - clock-names : must contain "MCLK"
+
+Example:
+
+cs42l51: cs42l51@4a {
+	compatible = "cirrus,cs42l51";
+	reg = <0x4a>;
+	clocks = <&mclk_prov>;
+	clock-names = "MCLK";
+};

Documentation/devicetree/bindings/trivial-devices.txt

@@ -35,7 +35,6 @@ at,24c08		i2c serial eeprom  (24cxx)
 atmel,at97sc3204t	i2c trusted platform module (TPM)
 capella,cm32181		CM32181: Ambient Light Sensor
 capella,cm3232		CM3232: Ambient Light Sensor
-cirrus,cs42l51		Cirrus Logic CS42L51 audio codec
 dallas,ds1374		I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output
 dallas,ds1631		High-Precision Digital Thermometer
 dallas,ds1672		Dallas DS1672 Real-time Clock