pcm052: bk4: Add board_phy_config() for BK4 to setup ksz8081 phy

BK4 requires setup of 50MHz reference clock for its KSZ8081 PHY devices.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
1 file changed