V4L/DVB: radio-si470x: Use UTF-8 encoding on a comment

This cosmetic patch corrects a wrong unicode "micro" character in a comment.

Signed-off-by: Tobias Lorenz <tobias.lorenz@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
1 file changed