sys_io: Add memory bit manipulation functions

This will be helpful also in drivers mostly, where non-atomic bit
setting could be unnecessary.

Change-Id: I10c069387d1045f14337b3ac8acfc7b6c1f106c3
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2 files changed