Reverse the bit sequence to set and display serdes clock frequency
correctly. The correct bit maps in BRDCFG2 are
0 1 2 3 4 5 6 7
S1RATE[1:0] S2RATE[1:0] S3RATE[1:0] S4RATE[1:0]
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com>