SP 51 Test failure on Beaglebone Black

[Chris Johns]

Running rtems-test with a recent u-boot and a current master this failure is reported:

] RTEMS Beagleboard: am335x-based
] 
] 
] *** BEGIN OF TEST SP 51 ***
] Create semaphore - priority ceiling unlocked - invalid ceiling
] Create semaphore - priority ceiling locked - violate ceiling
] Create semaphore - priority ceiling unlocked
] Obtain semaphore -- violate ceiling
] Release semaphore we did not obtain
] /opt/work/chris/rtems/kernel/rtems.git/c/src/../../testsuites/sptests/sp51/init.c: 41 sc == RTEMS_SUCCESSFUL