[media] move i2c files into drivers/media/i2c

Move ancillary I2C drivers into drivers/media/i2c, in order to
better organize them.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/pci/bt8xx/Makefile b/drivers/media/pci/bt8xx/Makefile
index ae347b7..5f06597 100644
--- a/drivers/media/pci/bt8xx/Makefile
+++ b/drivers/media/pci/bt8xx/Makefile
@@ -7,5 +7,5 @@
 
 ccflags-y += -Idrivers/media/dvb-core
 ccflags-y += -Idrivers/media/dvb-frontends
-ccflags-y += -Idrivers/media/video
+ccflags-y += -Idrivers/media/i2c
 ccflags-y += -Idrivers/media/tuners