pci: mpc85xx: Add missing sync() after writing to PCI config space
On PowerPC we should use barrier after store operation to HW register. Signed-off-by:Pali Rohár <pali@kernel.org> Reviewed-by:
Heiko Schocher <hs@denx.de> Tested-by:
Heiko Schocher <hs@denx.de>
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