Add i2c bus switch PCA9646 chip support, which 2-wire bus switch and buffered 4-channel. Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Add i2c bus switch PCA9646 chip support, which 2-wire bus switch and buffered 4-channel. Signed-off-by: Fugang Duan <fugang.duan@nxp.com>