powerpc: make of_device_ids const

of_device_ids (i.e. compatible strings and the respective data) are not
supposed to change at runtime. All functions working with of_device_ids
provided by <linux/of.h> work with const of_device_ids. This allows to
mark all struct of_device_id const, too.

While touching these line also put the __init annotation at the right
position where necessary.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/platforms/83xx/misc.c

@@ -114,7 +114,7 @@ void __init mpc83xx_ipic_and_qe_init_IRQ(void)
 }
 #endif /* CONFIG_QUICC_ENGINE */
 
-static struct of_device_id __initdata of_bus_ids[] = {
+static const struct of_device_id of_bus_ids[] __initconst = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .compatible = "simple-bus" },