linux-next: build warning after merge of the pci tree

[Stephen Rothwell]

Hi all,

After merging the pci tree, today's linux-next build (sparc defconfig)
produced this warning:

In file included from /home/sfr/next/next/include/linux/pci.h:37,
                 from /home/sfr/next/next/drivers/pci/pci-sysfs.c:19:
/home/sfr/next/next/include/linux/device.h:199:33: warning: 'dev_attr_boot_display' defined but not used [-Wunused-variable]
  199 |         struct device_attribute dev_attr_##_name = __ATTR_RO(_name)
      |                                 ^~~~~~~~~
/home/sfr/next/next/drivers/pci/pci-sysfs.c:688:8: note: in expansion of macro 'DEVICE_ATTR_RO'
  688 | static DEVICE_ATTR_RO(boot_display);
      |        ^~~~~~~~~~~~~~

Introduced by commit

  c4f2dc1e5293 ("PCI: Add a new 'boot_display' attribute")

-- 
Cheers,
Stephen Rothwell

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