ASoC: fsl-ssi: Update binding documentation

A lot of bindings where changed without an update of the binding
documentation. This patch adds those changes to the documentation.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

Documentation/devicetree/bindings/sound/fsl,ssi.txt

@@ -20,15 +20,6 @@ Required properties:
                     have.
 - interrupt-parent: The phandle for the interrupt controller that
                     services interrupts for this device.
-- fsl,mode:         The operating mode for the SSI interface.
-                    "i2s-slave" - I2S mode, SSI is clock slave
-                    "i2s-master" - I2S mode, SSI is clock master
-                    "lj-slave" - left-justified mode, SSI is clock slave
-                    "lj-master" - l.j. mode, SSI is clock master
-                    "rj-slave" - right-justified mode, SSI is clock slave
-                    "rj-master" - r.j., SSI is clock master
-                    "ac97-slave" - AC97 mode, SSI is clock slave
-                    "ac97-master" - AC97 mode, SSI is clock master
 - fsl,playback-dma: Phandle to a node for the DMA channel to use for
                     playback of audio.  This is typically dictated by SOC
                     design.  See the notes below.
@@ -47,6 +38,9 @@ Required properties:
                     be connected together, and SRFS and STFS be connected
                     together.  This would still allow different sample sizes,
                     but not different sample rates.
+ - clocks:          "ipg" - Required clock for the SSI unit
+                    "baud" - Required clock for SSI master mode. Otherwise this
+		      clock is not used
 
 Required are also ac97 link bindings if ac97 is used. See
 Documentation/devicetree/bindings/sound/soc-ac97link.txt for the necessary
@@ -64,6 +58,15 @@ Optional properties:
 		    Documentation/devicetree/bindings/dma/dma.txt.
 - dma-names:	    Two dmas have to be defined, "tx" and "rx", if fsl,imx-fiq
 		    is not defined.
+- fsl,mode:         The operating mode for the SSI interface.
+                    "i2s-slave" - I2S mode, SSI is clock slave
+                    "i2s-master" - I2S mode, SSI is clock master
+                    "lj-slave" - left-justified mode, SSI is clock slave
+                    "lj-master" - l.j. mode, SSI is clock master
+                    "rj-slave" - right-justified mode, SSI is clock slave
+                    "rj-master" - r.j., SSI is clock master
+                    "ac97-slave" - AC97 mode, SSI is clock slave
+                    "ac97-master" - AC97 mode, SSI is clock master
 
 Child 'codec' node required properties:
 - compatible:       Compatible list, contains the name of the codec