sys/v4l2/Makefile.am: Fix makefile, list libs in stack order.

sys/v4l2/Makefile.am: Fix makefile, list libs in stack order.

Original commit message from CVS:
* sys/v4l2/Makefile.am:
Fix makefile, list libs in stack order.
* sys/v4l2/gstv4l2colorbalance.c:
* sys/v4l2/gstv4l2colorbalance.h:
* sys/v4l2/gstv4l2object.c: (gst_v4l2_device_get_type),
(gst_v4l2_object_install_properties_helper):
* sys/v4l2/gstv4l2object.h:
* sys/v4l2/gstv4l2src.c: (gst_v4l2src_get_read),
(gst_v4l2src_get_mmap), (gst_v4l2src_create):
* sys/v4l2/gstv4l2src.h:
* sys/v4l2/gstv4l2tuner.h:
* sys/v4l2/gstv4l2vidorient.h:
* sys/v4l2/gstv4l2xoverlay.h:
* sys/v4l2/v4l2_calls.h:
* sys/v4l2/v4l2src_calls.h:
Fix coding style:
- Remove extern from functions.
- Fix header indentation.
Fix Flags, add defaults for properties.
Remove unused enums.
Fix TOO_LAZY in error messages.