spin_is_locked() provided by kernel has statement that we should not
rely heavily on the return value, it only tells that the spinlock is
seen to be locked, not that it is locked on your CPU.
Further, on CONFIG_SMP=n builds with CONFIG_DEBUG_SPINLOCK=n, the
return value is always 0.
So we should not use QDF_BUG to test/assert its return value, only be
used for debugging purpose.
Change-Id: I8854ebc6b96698f5272d77750da7d18582a288e9
CRs-Fixed: 2852179
19be165cba