Driver for Ricoh cardreader + few fixes

Hi,

This is third revision of my patches that conatains one more fix, and few fixes
for the driver.

Changes since V2:
* Removed accidently added hunk from r852.c
* Few cosmetic cleanups in the driver


--- original description from v2 ---

Patches 1-2 have no reason to be held  back from beeing merged in 2.6.35
In fact patch #2 should be added to -stable as well.

The actual driver (patch #3) is new driver, so it can't introduce regressions,
thus I think it can go to 2.6.36 as well.

I already have report form one user that driver works.

Best regards,
	Maxim Levitsky


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