ath79: fix wrong pll-data value for I-O DATA WN-AC-DGR devices
The pll-data value "0x56000000" is wrong for I-O DATA WN-AC1600DGR2
and WN-AC1167DGR, so there was a problem of slowing down the speed of
ethernet.
Signed-off-by: INAGAKI Hiroshi <[email protected]>