In CP115, comphy4 can be configured into SFI port1
(in addition to SFI0). This patch adds the option
described above.

In addition, rename all existing SFI/XFI references:
COMPHY_TYPE_SFI --> COMPHY_TYPE_SFI0

No functional change for exsiting configuration.

Change-Id: If9176222e0080424ba67347fe4d320215b1ba0c0
Signed-off-by: NIgal Liberman <igall@marvell.com>
Signed-off-by: NKonstantin Porotchkin <kostap@marvell.com>