bnxt_en: Issue PCIe FLR in kdump kernel to cleanup pending DMAs.

bnxt_en: Issue PCIe FLR in kdump kernel to cleanup pending DMAs.

[ Upstream commit 44570c87f576d268bec37c75706013ccbbc0e147 ]

If crashed kernel does not shutdown the NIC properly, PCIe FLR
is required in the kdump kernel in order to initialize all the
functions properly.

Fixes: 749910a040f7 ("bnxt_en: Reduce memory usage when running in kdump kernel.")
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>