pca-c-01: Added support for Ethernet 10/100Mbits Phy with RMII mode only

Signed-off-by: Trilokesh Rangam <lokesh.r@phytec.in>
pbac01: Added support for Gigabit Ethernet KSZ9021

Signed-off-by: Trilokesh Rangam <lokesh.r@phytec.in>