9625: i2c: Support I2C mini core on BLSP1 QUP2

Add device tree support for the i2c mini core on BLSP1 QUP2 which
is used by the Taiko CODEC.

Change-Id: I5184d63baa012d74b8a67fdfc45ede8ec2d5a12f
Signed-off-by: Kenneth Heitke <kheitke@codeaurora.org>