GuanXuetao 752bcb4d02 unicore32 core architecture: interrupts ang gpio handling
This patch implements interrupts and gpio handling.
UniCore32 has 9 gpio interrupt sources.
And gpio device operations are also here.

Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
2011-03-17 09:19:10 +08:00
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