net: ena: use lower_32_bits()/upper_32_bits() to split dma address

net: ena: use lower_32_bits()/upper_32_bits() to split dma address

BugLink: http://bugs.launchpad.net/bugs/1701575
In ena_com_mem_addr_set(), use the above functions to split dma address
to the lower 32 bits and the higher 16 bits.

Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 3ae5907c61587ed8327484bfdda87de0257ea73f net-next)
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Acked-by: Seth Forshee <seth.forshee@canonical.com>
Acked-by: Brad Figg <brad.figg@canonical.com>