media: dt-bindings: mipi,ccs: Don't mention vana voltage

It was mentioned vana voltage is typically 2,8 volts. This is truly sensor
dependent, and nowadays 2,8 volts is a lot.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

Documentation/devicetree/bindings/media/i2c/mipi-ccs.yaml

@@ -37,8 +37,7 @@ properties:
     maxItems: 1
 
   vana-supply:
-    description: Analogue voltage supply (VANA), typically 2,8 volts (sensor
-      dependent).
+    description: Analogue voltage supply (VANA), sensor dependent.
     maxItems: 1
 
   clocks: