ASoC: sta350: fix DT bindings document

Fix a misleading property description, and denote the fact that
st,output-conf and st,ch*-output-mapping have to be passed as /bits/ 8.
Signed-off-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NMark Brown <broonie@linaro.org>

Documentation/devicetree/bindings/sound/st,sta350.txt

@@ -25,6 +25,7 @@ Optional properties:
 	2: 2 Channel (Full-Bridge) Power, 1 Channel FFX
 	3: 1 Channel Mono-Parallel
 	If parameter is missing, mode 0 will be enabled.
+	This property has to be specified as '/bits/ 8' value.
 
   -  st,ch1-output-mapping: Channel 1 output mapping
   -  st,ch2-output-mapping: Channel 2 output mapping
@@ -33,6 +34,7 @@ Optional properties:
 	1: Channel 2
 	2: Channel 3
 	If parameter is missing, channel 1 is choosen.
+	This properties have to be specified as '/bits/ 8' values.
 
   -  st,thermal-warning-recover:
 	If present, thermal warning recovery is enabled.
@@ -82,7 +84,7 @@ Optional properties:
 	If not present, preset DC coefficient is used.
 
   -  st,invalid-input-detect-mute:
-	If not present, automatic invalid input detect mute is enabled.
+	If present, automatic invalid input detect mute is enabled.
 
 
 
@@ -93,12 +95,12 @@ codec: sta350@38 {
 	reg = <0x1c>;
 	reset-gpios = <&gpio1 19 0>;
 	power-down-gpios = <&gpio1 16 0>;
-	st,output-conf = <0x3>;			// set output to 2-channel
+	st,output-conf = /bits/ 8  <0x3>;	// set output to 2-channel
 						// (full-bridge) power,
 						// 2-channel data-out
-	st,ch1-output-mapping = <0>;		// set channel 1 output ch 1
-	st,ch2-output-mapping = <0>;		// set channel 2 output ch 1
-	st,ch3-output-mapping = <0>;		// set channel 3 output ch 1
+	st,ch1-output-mapping = /bits/ 8 <0>;	// set channel 1 output ch 1
+	st,ch2-output-mapping = /bits/ 8 <0>;	// set channel 2 output ch 1
+	st,ch3-output-mapping = /bits/ 8 <0>;	// set channel 3 output ch 1
 	st,max-power-correction;		// enables power bridge
 						// correction for THD reduction
 						// near maximum power output