tests: pm: adjust state_1 expected value

From the analysis of the the masurments so far it follows that
the expected value of the state_1 is too hight.
Change expected value of state_1 from 0.14 to 0.12.
Regarding the test:
  tests/subsys/pm/power_states

Signed-off-by: Artur Wilczak <arturx.wilczak@intel.com>
1 file changed