Use wl_fixed_t for axis bindings

In preparation for axis values being wl_fixed_t in the protocol as well.

Signed-off-by: Daniel Stone <daniel@fooishbar.org>
diff --git a/src/compositor.c b/src/compositor.c
index faa0619..037c2c0 100644
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -1722,7 +1722,7 @@
 
 	if (value)
 		weston_compositor_run_axis_binding(compositor, ws, time, axis,
-						   wl_fixed_to_int(value));
+						   value);
 	else
 		return;