itter Haavard Skinnemoen <hskinnemoen@atmel.com> 1177674252 +0200

[AVR32] Put cpu in sleep 0 when idle.

This patch puts the CPU in sleep 0 when doing nothing, idle. This will
turn of the CPU clock and thus save power. The CPU is waken again when
an interrupt occurs.

Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
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