FROMGIT: hwspinlock: Introduce hwspin_lock_bust()

When a remoteproc crashes or goes down unexpectedly this can result in
a state where locks held by the remoteproc will remain locked possibly
resulting in deadlock. This new API hwspin_lock_bust() allows
hwspinlock implementers to define a bust operation for freeing previously
acquired hwspinlocks after verifying ownership of the acquired lock.

Signed-off-by: Richard Maina <quic_rmaina@quicinc.com>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Chris Lew <quic_clew@quicinc.com>
Link: https://lore.kernel.org/r/20240529-hwspinlock-bust-v3-1-c8b924ffa5a2@quicinc.com


Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Bug: 341124907
(cherry picked from commit 7c327d56
 https://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux.git

 for-next)
Change-Id: I2e7a6de0bff03641e8cf602e86f864bc732b832d
Signed-off-by: Chris Lew <quic_clew@quicinc.com>