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After reshuffle pci_bar structrue we could write ~0U not BAR size mask to BAR configuration space directly when do BAR sizing. In this case, we could know whether the value in BAR configuration space is a valid base address. As a result, we could do BAR re-programming whenever we want. Tracked-On: #3475 Signed-off-by: Li Fei1 <fei1.li@intel.com>