PCI: iproc: Use of_property_read_bool() for boolean properties

Replace low-level property access functions like of_get_property() and
of_find_property() with their typed equivalents (i.e., of_property_read_<type>
functions), as it's preferred to use typed property access functions for
reading properties.

[kwilczynski: commit log]
Link: https://lore.kernel.org/linux-pci/[e-mail]
Signed-off-by: Rob Herring <[e-mail]>
Signed-off-by: Krzysztof Wilczyński <[e-mail]>
Reviewed-by: Florian Fainelli <[e-mail]>
Acked-by: Ray Jui <[e-mail]>

drivers/pci/controller/pcie-iproc-msi.c

···
 	if (!of_device_is_compatible(node, "brcm,iproc-msi"))
 		return -ENODEV;
 
-	if (!of_find_property(node, "msi-controller", NULL))
+	if (!of_property_read_bool(node, "msi-controller"))
 		return -ENODEV;
 
 	if (pcie->msi)
···
 		return -EINVAL;
 	}
 
-	if (of_find_property(node, "brcm,pcie-msi-inten", NULL))
-		msi->has_inten_reg = true;
+	msi->has_inten_reg = of_property_read_bool(node, "brcm,pcie-msi-inten");
 
 	msi->nr_msi_vecs = msi->nr_irqs * EQ_LEN;
 	msi->bitmap = devm_bitmap_zalloc(pcie->dev, msi->nr_msi_vecs,