Move the existing calls of mpc_i2c_fixup() to a recovery function
registered via bus_recovery_info. This makes it more obvious that
recovery is supported and allows for a future where recovery is
triggered by the i2c core.
Signed-off-by: NChris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: NWolfram Sang <wsa@kernel.org>