[media] lnbh25: LNBH25 SEC controller driver

Add DVB SEC frontend driver for STM LNBH25PQR chip.

[mchehab@osg.samsung.com: fix merge conflict:
 fe_sec_voltage_t should not be used in kernelspace anymore.
 instead, it should use enum fe_sec_voltage]
Signed-off-by: Kozlov Sergey <serjk@netup.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/drivers/media/dvb-frontends/Kconfig b/drivers/media/dvb-frontends/Kconfig
index ec628c4..82b21b9 100644
--- a/drivers/media/dvb-frontends/Kconfig
+++ b/drivers/media/dvb-frontends/Kconfig
@@ -713,6 +713,14 @@
 
 source "drivers/media/dvb-frontends/drx39xyj/Kconfig"
 
+config DVB_LNBH25
+	tristate "LNBH25 SEC controller"
+	depends on DVB_CORE && I2C
+	default m if !MEDIA_SUBDRV_AUTOSELECT
+	help
+	  An SEC control chip.
+	  Say Y when you want to support this chip.
+
 config DVB_LNBP21
 	tristate "LNBP21/LNBH24 SEC controllers"
 	depends on DVB_CORE && I2C