V4L/DVB (3495): Kconfig: select VIDEO_CX25840 to build cx25840 a/v decoder module

The cx25840 module requires external firmware in order to function,
so it must select FW_LOADER, but saa7115 and saa7129 do not require it.
This patch creates VIDEO_CX25840, and alters VIDEO_DECODER to select it.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/Kconfig

@@ -359,8 +359,11 @@ config VIDEO_AUDIO_DECODER
 config VIDEO_DECODER
 	tristate "Add support for additional video chipsets"
 	depends on VIDEO_DEV && I2C && EXPERIMENTAL
+	select VIDEO_CX25840
 	---help---
 	  Say Y here to compile drivers for SAA7115, SAA7127 and CX25840
 	  video decoders.
 
+source "drivers/media/video/cx25840/Kconfig"
+
 endmenu

drivers/media/video/Makefile

@@ -62,6 +62,7 @@ obj-$(CONFIG_VIDEO_TVEEPROM) += tveeprom.o
 
 obj-$(CONFIG_VIDEO_M32R_AR_M64278) += arv.o
 
-obj-$(CONFIG_VIDEO_DECODER)     += saa7115.o cx25840/ saa7127.o
+obj-$(CONFIG_VIDEO_DECODER)     += saa7115.o saa7127.o
+obj-$(CONFIG_VIDEO_CX25840) += cx25840/
 
 EXTRA_CFLAGS += -I$(srctree)/drivers/media/dvb/dvb-core

drivers/media/video/cx25840/Kconfig

+config VIDEO_CX25840
+	tristate "Conexant CX2584x audio/video decoders"
+	depends on VIDEO_DEV && I2C && EXPERIMENTAL
+	select FW_LOADER
+	---help---
+	  Support for the Conexant CX2584x audio/video decoders.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called cx25840

drivers/media/video/cx25840/Makefile

 cx25840-objs    := cx25840-core.o cx25840-audio.o cx25840-firmware.o \
 		   cx25840-vbi.o
 
-obj-$(CONFIG_VIDEO_DECODER) += cx25840.o
+obj-$(CONFIG_VIDEO_CX25840) += cx25840.o
 
 EXTRA_CFLAGS += -I$(src)/..