virt: fsl: Use of_property_present() for testing DT property presence

It is preferred to use typed property access functions (i.e.
of_property_read_<type> functions) rather than low-level
of_get_property/of_find_property functions for reading properties. As
part of this, convert of_get_property/of_find_property calls to the
recently added of_property_present() helper when we just want to test
for presence of a property and nothing more.

Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Rob Herring <[e-mail]>

drivers/virt/fsl_hypervisor.c

···
 	if (!node)
 		return 0;
 
-	ret = of_find_property(node, "fsl,hv-version", NULL) != NULL;
+	ret = of_property_present(node, "fsl,hv-version");
 
 	of_node_put(node);