PCI: keystone: Relocate ks_pcie_set/clear_dbi_mode()

[ Upstream commit 5125fdc3 ]

Relocate ks_pcie_set_dbi_mode() and ks_pcie_clear_dbi_mode() to avoid
forward declaration in a subsequent patch. No functional change intended.

Link: https://lore.kernel.org/linux-pci/20240328085041.2916899-2-s-vadapalli@ti.com


Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Stable-dep-of: 9ffa0e70 ("PCI: keystone: Don't enable BAR 0 for AM654x")
Signed-off-by: Sasha Levin <sashal@kernel.org>