V4L/DVB (7223): Add support for the ISL6405 dual LNB supply chip

The chip can control 2 LNBs independently.
The driver distinguishes them by evaluating the MSB of the override_set
parameter of the isl6405_attach function.
Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/dvb/frontends/Kconfig

@@ -379,6 +379,13 @@ config DVB_LNBP21
 	help
 	  An SEC control chip.
 
+config DVB_ISL6405
+	tristate "ISL6405 SEC controller"
+	depends on DVB_CORE && I2C
+	default m if DVB_FE_CUSTOMISE
+	help
+	  An SEC control chip.
+
 config DVB_ISL6421
 	tristate "ISL6421 SEC controller"
 	depends on DVB_CORE && I2C

drivers/media/dvb/frontends/Makefile

@@ -38,6 +38,7 @@ obj-$(CONFIG_DVB_S5H1420) += s5h1420.o
 obj-$(CONFIG_DVB_LGDT330X) += lgdt330x.o
 obj-$(CONFIG_DVB_CX24123) += cx24123.o
 obj-$(CONFIG_DVB_LNBP21) += lnbp21.o
+obj-$(CONFIG_DVB_ISL6405) += isl6405.o
 obj-$(CONFIG_DVB_ISL6421) += isl6421.o
 obj-$(CONFIG_DVB_TDA10086) += tda10086.o
 obj-$(CONFIG_DVB_TDA826X) += tda826x.o