[pvrusb2] 24xxx IR support - there is hope yet

[Mike Isely]

A couple nights I ran some experiments comparing bus traffic between 29xxx 
and 24xxx devices while IR codes were being received.  I believe I 
understand now how 24xxx IR is working.  And while it is completely 
different than the 29xxx device's mechanism, I think I understand it well 
enough to emulate the correct behavior within the pvrusb2 driver.

What this all means is that I think we'll soon see IR reception finally 
working on 24xxx devices.  Wheee!!

  -Mike


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