powerpc/hydra: fix judging condition of RGMII selection

BRDCFG1_EMI1_SEL_MASK has been changed to 0x78, which contains
selection bits and connected status bit. So the Corresponding mux
value of RGMII is changed to BRDCFG1_EMI1_SEL_RGMII | BRDCFG1_EMI1_EN.

Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>
Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
1 file changed