[media] doc-rst: add documentation for si470x

Convert it to ReST and add to media/v4l-drivers book.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Mauro Carvalho Chehab 2016-07-17 19:52:48 -03:00
commit b4a41387be
2 changed files with 56 additions and 19 deletions