In some parts of the mtce code some implicit fallthrough are used.
This causes a warning in the compiler and in OSes like openSUSE the
-Werror flag is enforced leading to a build error.
In this commit the MTCE_FALLTHROUGH macro is used to tell the
compiler to not worry about this implicit fallthroughs as the it works
as intended.
Change-Id: I608d80eaa7298d0613ffa62ee82e03463d193d87
Signed-off-by: Erich Cordoba <erich.cordoba.malibran@intel.com>