uboot-phytec

board: mscc: serval: Fix board detect

When detecting the board, it was reading a register in the GPIO page of
the phy and based on that value it was making a decision. The bug was that
after the GPIO page for the first phy was set it was not reseted back.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>