pci: Scale MAX_PCI_REGIONS based on CONFIG_NR_DRAM_BANKS
If a platform defines CONFIG_NR_DRAM_BANKS, each DRAM bank will be added as a PCI region. The number of MAX_PCI_REGIONS therefore needs to scale with the number of DRAM banks, otherwise we will end up with too little space in the hose->regions array to store all system memory regions. Signed-off-by:Thierry Reding <treding@nvidia.com> Reviewed-by:
Simon Glass <sjg@chromium.org>
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