PCI: hv: Fix typo

Fix misspelling of "silently".

Link: https://lore.kernel.org/r/20210126213855.2923461-1-helgaas@kernel.org


Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>