rockchip: add interrupt debugger to dump pt_regs

We install a timer interrupt and dump pt_regs when
the timeout event trigger. This help us to know cpu
state when system hang.

Change-Id: I91aa23220

rockchip: add interrupt debugger to dump pt_regs

We install a timer interrupt and dump pt_regs when
the timeout event trigger. This help us to know cpu
state when system hang.

Change-Id: I91aa2322036ae83ac8b9cd299bef9b521995d85b
Signed-off-by: Joseph Chen <chenjh@rock-chips.com>

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