In order to cover maximum of code, make different platforms
use different driver configuration. This way basic_atom uses
legacy emulation combined with edge-triggered interrupts while
galileo platform uses normal mode combined with level-triggered
interrupts.
Change-Id: Ib80553dbb16cf6bbe61ee5e41788031037f41860
Signed-off-by: Dmitriy Korovkin <dmitriy.korovkin@windriver.com>