First round of commits towards u-boot for CuBox-i

6ce2283 - Bug in calculating mii speed. This bug surfaced when using the internally generated 25MHz clock for the ar8035 phy
60332b7 - Generate 25MHz clock
e11cd73 - DDR config files naming was incorrect
079e18f - Quad CPU configuration file
77f4d7c - Added mtest and removed fixed MAC address from the env