This patch against 2.5.31 fixes some problems in the konicawc driver

- add new video mode 160x120
- add konicawc_camera_on/off()
- initially send out URBs in status,data order
- fix konicawc_isoc_irq to always resubmit status then data URBs
- tidy up debug messages
- make konicawc_compress_iso look for frame start on initial image