This is quite similar to b39fe41f481d20c201012e4483e76c203802dda7
though said registers are not even documented as 64-bit registers
- as opposed to the initial TxDescStartAddress ones - but as single
bytes which must be combined into 32 bits at the MMIO read/write
level before being merged into a 64 bit logical entity.
Credits go to Ben Hutchings <firstname.lastname@example.org> for the MAR
registers (aka "multicast is broken for ages on ARM) and to
Timo Teräs <email@example.com> for the MAC registers.
Signed-off-by: Francois Romieu <firstname.lastname@example.org>
Signed-off-by: David S. Miller <email@example.com>
(cherry picked from commit 78f1cd02457252e1ffbc6caa44a17424a45286b8)