Revert "I2C: omap: Fix error condition when slave sends a NAK"

This reverts commit 77961d4ee57118a7de2c8398e34c1ba64c859002.

Change-Id: I3018cffe2f0f15bf2343a21c15089cfb83506840
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0