i2c/aspeed: Fix reset control

The reset control was written for the ast2500 and directly programs the
clocking register.

So we can share the code with other SoC generations use the reset device
to deassert the I2C reset line.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Ryan Chen <ryan_chen@aspeedtech.com>
1 file changed