unified: Eliminate thread config structure used by work queues

Reworks k_work_q_start() so that it accepts its 3 configuration
settings directly, rather than forcing the caller to pass in a
configuration data structure.

Change-Id: Ic0bd1b94f1a1c8e0f8a84b3bd3677d59d0708734
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
4 files changed