PCI: Constify bin_attribute structures

Add const to bin_attribute structures as they are only passed to the
functions sysfs_{remove/create}_bin_file. The corresponding arguments are
of type const, so declare the structures to be const.
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

drivers/pci/pci-sysfs.c

@@ -1431,7 +1431,7 @@ static ssize_t pci_read_rom(struct file *filp, struct kobject *kobj,
 	return count;
 }
 
-static struct bin_attribute pci_config_attr = {
+static const struct bin_attribute pci_config_attr = {
 	.attr =	{
 		.name = "config",
 		.mode = S_IRUGO | S_IWUSR,
@@ -1441,7 +1441,7 @@ static struct bin_attribute pci_config_attr = {
 	.write = pci_write_config,
 };
 
-static struct bin_attribute pcie_config_attr = {
+static const struct bin_attribute pcie_config_attr = {
 	.attr =	{
 		.name = "config",
 		.mode = S_IRUGO | S_IWUSR,