OMXNodeInstance: Allow skipping CVE-2017-13154

This commit breaks the audio and/or video playback on some devices.

Wrap into #ifndef/#endif statement to allow skipping this patch
for specific devices by adding the following directive into the
BoardConfig.mk or BoardConfigCommon.mk file of the device repo:
  BOARD_SKIP_CVE_2017_13154 := true

cm-11.0: Use a Boardflag instead of a global C/C++ flag

Change-Id: I9796dc5b1389668c33e7aebbe703baa1244192c8