uboot-imx

Kconfig: Drop CONFIG_SYS_I2C_DS1621_ADDR

Now that dtt is gone, this is not used. Drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>