ASoC: rt5670: redefine ASRC control registers 0x84 and 0x85

The previous definition of registers 0x84 and 0x85 doesn't match the datasheet.
So this patch removes the wrong definition and writes a new one for the two
registers.

Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>