Comment 4 for bug 507887

as i expected:

cpu/arm_cortexa8/mx51/libmx51.a(generic.o): In function `cpu_eth_init':
cpu/arm_cortexa8/mx51/generic.c:261: undefined reference to `mxc_fec_set_mac_from_env'

is there another patch i'm missing that is not in the BSP ?