net: dpaa2-mac: Add ACPI support for DPAA2 MAC driver

commit 4d291874df79dc1a0e374df35295468f8436ea83 from
git://source.codeaurora.org/external/qoriq/qoriq-components/linux



Modify dpaa2_mac_get_node() to get the dpmac fwnode from either
DT or ACPI.

Modify dpaa2_mac_get_if_mode() to get interface mode from dpmac_node
which is a fwnode.

Modify dpaa2_pcs_create() to create pcs from dpmac_node fwnode.

Modify dpaa2_mac_connect() to support ACPI along with DT.

Signed-off-by: Calvin Johnson <calvin.johnson@oss.nxp.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Acked-by: Rafael J. Wysocki <rafael@kernel.org> # from the ACPI side
Acked-by: Grant Likely <grant.likely@arm.com>
(cherry picked from commit 7ce78a1853f773b83f7cf100906b21c6bc5f8558)
Signed-off-by: Meng Li <Meng.Li@windriver.com>