riscv: print the unexpected interrupt cause

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This has been helpful when debugging my pending nommu port.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Nick Kossifidis <mick@ics.forth.gr>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>

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Christoph Hellwig 2019-04-15 11:14:41 +02:00 • committed by Palmer Dabbelt

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arch/riscv/kernel/irq.c

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