samples: v4l: from Documentation to samples directory

A small bug with the new autoksyms support showed that there are
two kernel modules in the Documentation directory that qualify
as samples, while all other samples are in the samples/ directory.

This patch was originally meant as a workaround for that bug, but
it has now been solved in a different way. However, I still think
it makes sense as a cleanup to consolidate all sample code in
one place.

Signed-off-by: Arnd Bergmann <[e-mail]>
Acked-by: Hans Verkuil <[e-mail]>
Acked-by: Mauro Carvalho Chehab <[e-mail]>
Signed-off-by: Jonathan Corbet <[e-mail]>

Documentation/Makefile

···
 subdir-y := accounting auxdisplay blackfin \
 	filesystems filesystems ia64 laptops mic misc-devices \
-	networking pcmcia prctl ptp timers vDSO video4linux \
-	watchdog
+	networking pcmcia prctl ptp timers vDSO watchdog

Documentation/video4linux/v4l2-framework.txt

···
 common code into utility functions shared by all drivers.
 
 A good example to look at as a reference is the v4l2-pci-skeleton.c
-source that is available in this directory. It is a skeleton driver for
+source that is available in samples/v4l/. It is a skeleton driver for
 a PCI capture card, and demonstrates how to use the V4L2 driver
 framework. It can be used as a template for real PCI video capture driver.
 

samples/Makefile

···
 
 obj-$(CONFIG_SAMPLES)	+= kobject/ kprobes/ trace_events/ livepatch/ \
 			   hw_breakpoint/ kfifo/ kdb/ hidraw/ rpmsg/ seccomp/ \
-			   configfs/ connector/
+			   configfs/ connector/ v4l/