[media] fc2580: use regmap for register I2C access

Replace home made register access routines with regmap.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/drivers/media/tuners/Kconfig b/drivers/media/tuners/Kconfig
index db4caf2..26961da 100644
--- a/drivers/media/tuners/Kconfig
+++ b/drivers/media/tuners/Kconfig
@@ -220,6 +220,7 @@
 config MEDIA_TUNER_FC2580
 	tristate "FCI FC2580 silicon tuner"
 	depends on MEDIA_SUPPORT && I2C
+	select REGMAP_I2C
 	default m if !MEDIA_SUBDRV_AUTOSELECT
 	help
 	  FCI FC2580 silicon tuner driver.