pds_core: use pci_reset_function for health reset

We get the benefit of all the PCI reset locking and recovery if
we use the existing pci_reset_function() that will call our
local reset handlers.

Reviewed-by: Brett Creeley <brett.creeley@amd.com>
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>