of: property: fw_devlink: Ignore interrupts property for some configs

When CONFIG_OF_IRQ is not defined, it doesn't make sense to parse
interrupts property.

Also, parsing and tracking interrupts property breaks some PPC
devices[1].  But none of the IRQ drivers in PPC seem ready to be
converted to a proper platform (or any bus) driver. So, there's not much
of a point in tracking the interrupts property for CONFIG_PPC. So, let's
stop parsing interrupts for CONFIG_PPC.

[1] - https://lore.kernel.org/lkml/20210213185422.GA195733@roeck-us.net/

Fixes: 4104ca7 ("of: property: Add fw_devlink support for interrupts")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20210215224258.1231449-1-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/of/property.c

@@ -1300,6 +1300,9 @@ static struct device_node *parse_interrupts(struct device_node *np,
 {
 	struct of_phandle_args sup_args;
 
+	if (!IS_ENABLED(CONFIG_OF_IRQ) || IS_ENABLED(CONFIG_PPC))
+		return NULL;
+
 	if (strcmp(prop_name, "interrupts") &&
 	    strcmp(prop_name, "interrupts-extended"))
 		return NULL;