power-management code clean up on CVS

[Takashi Iwai <tiwai@suse.de>]

Hi,

this is another big update of the whole trees.
i modified the power-management routines in alsa-kernel and
alsa-driver.  with this change, each card driver needs only suspend
and resume callbacks and a single registration function.
the corresponding section of writing-an-alsa-driver document is also
updated.

i'll try to implement the suspend/resume code of some missing drivers
for software suspend.

the 2.2/2.4 kernels should be ok, but untested yet.  please report if
any problem occurs by this change.


thanks,

Takashi		(will be offline for the easter vacation...)


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