Like 8250 driver, when pstore is registered as a console,
to avoid recursive spinlocks when panic happening, change the
spin_lock_irqsave to spin_trylock_irqsave when oops_in_progress
is true.
Signed-off-by: Nliu chuansheng <chuansheng.liu@intel.com>
Signed-off-by: NAnton Vorontsov <anton.vorontsov@linaro.org>