ibmvnic: Allocate number of rx/tx buffers agreed on by firmware

ibmvnic: Allocate number of rx/tx buffers agreed on by firmware

[ Upstream commit 068d9f90a6978c3e3a662d9e85204a7d6be240d2 ]

The amount of TX/RX buffers that the vNIC driver currently allocates
is different from the amount agreed upon in negotiation with firmware.
Correct that by allocating the requested number of buffers confirmed
by firmware.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>