vmw_pvscsi: Use pci_enable_msix_exact() instead of pci_enable_msix()

vmw_pvscsi: Use pci_enable_msix_exact() instead of pci_enable_msix()

As result of deprecation of MSI-X/MSI enablement functions
pci_enable_msix() and pci_enable_msi_block() all drivers
using these two interfaces need to be updated to use the
new pci_enable_msi_range()  or pci_enable_msi_exact()
and pci_enable_msix_range() or pci_enable_msix_exact()
interfaces.

Signed-off-by: Alexander Gordeev <[email protected]>
Acked-by: Arvind Kumar <[email protected]>
Signed-off-by: Christoph Hellwig <[email protected]>