tree 71de6c98aebe9e801b51035cf4f142c2c2ee9053
parent e8c9cd649f37b4b43775ed4f3039701f771d836e
author Lei YU <mine260309@gmail.com> 1572857619 +0800
committer Lei YU <mine260309@gmail.com> 1575872081 +0800

tools: Initially add i2c tool and mock

The power-utils will invoke i2c get/set commands to the i2c device for
PSU code update.
Create a separated i2c tool because it is logically standalone and could
be shared for other utils.
Also add an I2CInterface and its mock to make it easier to test when
developing i2c related operations.

Signed-off-by: Lei YU <mine260309@gmail.com>
Change-Id: If5383547e6d84c0a79610e2d2d6f2fa8ee9dc061