Marvell/Drivers: I2c: Use common header for macros

Hitherto I2c solution used same macros, defined in multiple
places. Move them to a new common header.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>