xtensa/PCI: Make variables static
Make these variables static, since they're only used in this file:
pci_ctrl_head
pci_ctrl_tail
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Make these variables static, since they're only used in this file:
pci_ctrl_head
pci_ctrl_tail
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>