dt-bindings: gnss: fix timepulse description

The timepulse pin is an output that can be used to generate a pulse at a
(configurable) frequency (i.e. it is not an input).

Fixes: dba5296 ("dt-bindings: gnss: Rewrite common bindings in YAML")
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Johan Hovold <johan@kernel.org>

Author: jhovold

Documentation/devicetree/bindings/gnss/gnss-common.yaml

@@ -31,8 +31,7 @@ properties:
     maxItems: 1
 
   timepulse-gpios:
-    description: When a timepulse is provided to the GNSS device using a
-      GPIO line, this is used.
+    description: Timepulse signal
     maxItems: 1
 
 additionalProperties: true