net: mvpp2: Replace PHY_INTERFACE_MODE_SFI with 5GBASER/10GBASER/XAUI

Replace PHY_INTERFACE_MODE_SFI with PHY_INTERFACE_MODE_5GBASER,
PHY_INTERFACE_MODE_10GBASER and PHY_INTERFACE_MODE_XAUI to match
Linux PHY interface modes.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>