tests: p4wq: set log level for test

Log messages from workqueue are very chatty and on some systems cause
dropping of messages coming from the tests, so set the level to not get
warnings.

Fixes #45670

Signed-off-by: Anas Nashif <[email protected]>

Author: nashif

tests/lib/p4workq/prj.conf

@@ -1,7 +1,7 @@
 CONFIG_TEST_RANDOM_GENERATOR=y
 CONFIG_ZTEST=y
 CONFIG_SCHED_DEADLINE=y
-
+CONFIG_LOG_DEFAULT_LEVEL=1
 # Test whiteboxes the wait_q and expects it to be a dlist
 CONFIG_WAITQ_SCALABLE=n
 CONFIG_WAITQ_DUMB=y