mfd: Fix ab8500-core interrupt ffs bit bug
We want to find the first set bit on value, not status.
Signed-off-by: Mattias Wallin <mattias.wallin@stericsson.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
authored by Mattias Wallin and committed by Samuel Ortiz 88aec4f7 bd7c72ed