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This updates the sonypi driver by:
 * fixing the power management handling, using the new device
   model PM scheme.

 * adds "VGN-" as a DMI search pattern for a Sony Vaio laptop.

Florian Lohoff reported the power management issue and tested the
patch.

Many users reported the DMI name issue, including Till Busch who
made a patch for dmi_scan.c.
Signed-off-by: Stelian Pop <stelian@popies.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>