media: ngene: add XO2 module support
Detect and initialise modules equipped with XO2 interfaces (Lattice MachXO2). This requires a few more I2C transfer functions which this adds as well. Defines for the different possible (available) module types are added to ngene.h. The support for the actual tuners contained on these addon modules is kept separate from this commit and is being added with the next commits. The xo2names array is temporarily marked __maybe_unused to silence a corresponding compiler warning at this stage. Signed-off-by: NDaniel Scheller <d.scheller@gmx.net> Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>
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