[media] drivers: media: tuners: Fix dependency for MEDIA_TUNER_TEA5761

Fix the following build warning:

warning: (MEDIA_TUNER) selects MEDIA_TUNER_TEA5761 which has unmet direct
dependencies (MEDIA_SUPPORT && VIDEO_MEDIA && I2C && EXPERIMENTAL)

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>