sparc: Use of_property_read_bool() for boolean properties

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.
Convert reading boolean properties to to of_property_read_bool().

Link: https://lore.kernel.org/r/20230310144700.1541345-1-robh@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

arch/sparc/kernel/pci_schizo.c

@@ -1270,7 +1270,7 @@ static void schizo_pbm_hw_init(struct pci_pbm_info *pbm)
 	    pbm->chip_version >= 0x2)
 		tmp |= 0x3UL << SCHIZO_PCICTRL_PTO_SHIFT;
 
-	if (!of_find_property(pbm->op->dev.of_node, "no-bus-parking", NULL))
+	if (!of_property_read_bool(pbm->op->dev.of_node, "no-bus-parking"))
 		tmp |= SCHIZO_PCICTRL_PARK;
 	else
 		tmp &= ~SCHIZO_PCICTRL_PARK;

arch/sparc/kernel/power.c

@@ -28,7 +28,7 @@ static int has_button_interrupt(unsigned int irq, struct device_node *dp)
 {
 	if (irq == 0xffffffff)
 		return 0;
-	if (!of_find_property(dp, "button", NULL))
+	if (!of_property_read_bool(dp, "button"))
 		return 0;
 
 	return 1;