TSEC: Add the support for RealTek RTL8211B PHY

Add the support of RealTek RTL8211B PHY, the RTL8211B
PHY only supports RGMII and MII mode.

Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
2 files changed