sanitycheck not able to run due to CONFIG_ARC_INIT=n

[galak]

The following commit, introduces CONFIG_ARC_INIT=n, which ends up getting us this error:

Error: Aborting due to non-whitelisted Kconfig warning 'prj_socwatch.conf:2: warning: attempt to assign the value "n" to the undefined symbol ARC_INIT'.

Easily reproduced by doing:

./scripts/sanitycheck -p frdm_kw41z

commit 8525944 (HEAD, refs/bisect/bad)
Author: Niranjhana N niranjhana.n@intel.com
Date: Thu Jul 26 15:34:41 2018 +0530

tests: power: refactor power_states test

Refactored test to work with ztest framework
and to calculate and display time in milliseconds
for each power state.

Signed-off-by: Niranjhana N <niranjhana.n@intel.com>