media: dvb-core: make DVB mmap API optional
This API is still experimental. Make it optional, allowing to
compile the code without it.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>
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This API is still experimental. Make it optional, allowing to
compile the code without it.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>