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/kernel/ibmebus.c

@@ -55,7 +55,7 @@ static struct device ibmebus_bus_device = { /* fake "parent" device */
 struct bus_type ibmebus_bus_type;
 
 /* These devices will automatically be added to the bus during init */
-static struct of_device_id __initdata ibmebus_matches[] = {
+static const struct of_device_id ibmebus_matches[] __initconst = {
 	{ .compatible = "IBM,lhca" },
 	{ .compatible = "IBM,lhea" },
 	{},

arch/powerpc/kernel/legacy_serial.c

@@ -35,7 +35,7 @@ static struct legacy_serial_info {
 	phys_addr_t			taddr;
 } legacy_serial_infos[MAX_LEGACY_SERIAL_PORTS];
 
-static struct of_device_id legacy_serial_parents[] __initdata = {
+static const struct of_device_id legacy_serial_parents[] __initconst = {
 	{.type = "soc",},
 	{.type = "tsi-bridge",},
 	{.type = "opb", },

arch/powerpc/kernel/of_platform.c

@@ -97,7 +97,7 @@ static int of_pci_phb_probe(struct platform_device *dev)
 	return 0;
 }
 
-static struct of_device_id of_pci_phb_ids[] = {
+static const struct of_device_id of_pci_phb_ids[] = {
 	{ .type = "pci", },
 	{ .type = "pcix", },
 	{ .type = "pcie", },