modularize ehci_hcd - attempt to fix "unable to read config index descriptor"
enable block devices access throttle for vserver
turns out we needed saa7115 for em28xx video decoding

turned on automatic chip selection for debugging
3.3.2-pf make oldconfig + vserver-2.3.3.2
3.4.6-pf make oldconfig + vserver-2.3.3.5

main motivation was "Nasty md/raid bug" [1]. we were also still
struggling with getting em28xx video capture working. ehci_hcd subsystem
got hosed again. on last 3.3.2 shutdown we also got major kernel panics,
related to LCDd afaics.

@pf-kernel managed to figure out a way for us to better integrate
vserver with tuxonice as of 3.4.1-pf. key was apparently not to use
bitshifted constants, but some free values from the section above.
MS_TAGGED is now simply 256. @pf-kernel ended up reverting vserver
because of user reports of instability, so this needs to be monitored.

[1]: http://neil.brown.name/blog/20120615073245
wiimote support, requires leds
3.4.6-pf64
enable joystick for performous
iotop needs task accounting
nvidia-driver-304.60 wants CONFIG_ZONE_DMA
3.4.18-pf64