staging: wfx: simplify hif_set_arp_ipv4_filter() usage

The structure hif_mib_arp_ip_addr_table come from hardware API. It is
not intended to be manipulated in upper layers of the driver.

In add, current code for hif_set_arp_ipv4_filter() is too dumb. It
should pack data using the hardware representation instead of leaving
all work to the caller.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200115135338.14374-9-Jerome.Pouiller@silabs.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>