smi: msys: add GMAC PHY SMI support

        -removed MV_ETH_LEGACY support
        -added basic phy and neta support + phy init
        -added CPU interface address decode print during bc2 init
        -since HW issue the only UT for read/write of phy smi register
          was performed regarding correctness of register offset, only next
          HW spin will fix this limitation which then should be verified

Change-Id: I43b5f8b09e2ce761a9e88df5d727c030f706eb24
Signed-off-by: Ofer Heifetz <oferh@marvell.com>
Reviewed-on: http://vgitil04.il.marvell.com:8080/5454
Tested-by: Star_Automation <star@marvell.com>
Reviewed-by: Dmitri Epshtein <dima@marvell.com>
4 files changed