davinci: remove CONFIG_DM_I2C_COMPAT from defconfigs

davinci: remove CONFIG_DM_I2C_COMPAT from defconfigs

This option is no longer used on any davinci board but still selected
in defconfigs which causes the following warning:

===================== WARNING ======================
This board uses CONFIG_DM_I2C_COMPAT. Please remove
(possibly in a subsequent patch in your series)
before sending patches to the mailing list.
====================================================

Remove all references to CONFIG_DM_I2C_COMPAT from davinci.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Heiko Schocher <hs@denx.de>