Add Infineon_LFBGA-292_17x17mm

[cronJ]

https://www.infineon.com/cms/en/product/packages/PG-LFBGA/PG-LFBGA-292-11/

[codeclimate]

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[cpresser]

The datasheet is weird. I cant see if the ball-size is 0.5 or 0.35mm.

Also, it seems this is a SolderMaskDefined example footprint. However, I see a postive mask_margin in the changeset.

[chschlue]

The drawing is... highly original, but I think they suggest 0.5mm mask, 0.35mm copper, making it NSMD.
(The hatched "blob" is supposed to be mask and if you look closely, the diagonal lines stop at the 0.5mm circles, so that's supposedly the mask cutout.)

Edit: oh, and the actual balls are 0.5mm according to the first image on the package page.

[cpresser]

I think you are right.. I checked the PDF again, one can zoom in:

IPC suggest a 0.4mm pad for a 0.5mm ball

But the numbers are pretty close.

@cronJ Please get rid of the mask_margin parameter. Then the mask will be controlled by the board settings.

[cpresser]

Is there also a footprint PR? If yes, please update it with the generator output and ping me so I can merge it.