cfa10036.inc: Ensure we don't include gst-fsl-plugin

As cfa10036-based machines use linux-cfa which is based on Linux
mainline it cannot building the gst-fsl-plugin due missing
FSL-specific headers.

Change-Id: Iba09f1af37e08a0ae6b8aa15f2d0f554ad58a73e
Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>