net: marvell: Allow drivers to be built with COMPILE_TEST

All Marvell Ethernet drivers actually build fine with COMPILE_TEST with
a few warnings. We need to add a few HAS_DMA dependencies to fix linking
failures on problematic architectures like m32r.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>