samples: blackfin: dead config options

[Valentin Rothberg]

Hi Shua,

your commit c6d2995da540 ("samples: move blackfin gptimers-example
from Documentation") has popped up in today's linux-next.
scripts/checkkconfigsymbols.py complained about two issues.

The refactoring from build rules to Kconfig preserved the 'CONFIG_'
prefix (i.e., depends on CONFIG_BLACKFIN && CONFIG_BFIN_GPTIMERS...),
rendering SAMPLE_BLACKFIN_GPTIMERS to be dead.

The patch also removes the option BUILD_DOCSRC, which has one leftover
dependency in  drivers/media/v4l2-core/Kconfig (VIDEO_PCI_SKELETON).

Are there patches queued somewhere to address the upper issues?

Best regards,
 Valentin