fix implicit declarations
fix implicit declarations

ARM used to explicitly remove this file from the build. With the RTCD
changes, that's no longer possible. These errors also exist for x86 w/o
RTCD, but that's not the default configuration

Change-Id: I3e10e5553ddf3278e8d3c9365ca6fb84f52f5066

jmvalin/aom,Acidburn0zzz/webm.libvpx,turbulenz/libvpx,Maria1099/webm.libvpx,jacklicn/webm.libvpx,GrokImageCompression/aom,mwgoldsmith/vpx,n4t/libvpx,openpeer/libvpx_new,zofuthan/libvpx,iniwf/webm.libvpx,matanbs/webm.libvpx,rikaunite/gst-opera_libvpx,kim42083/webm.libvpx,stewnorriss/libvpx,Laknot/libvpx,mbebenita/aom,Suvarna1488/webm.libvpx,openpeer/libvpx_new,running770/libvpx,Maria1099/webm.libvpx,gshORTON/webm.libvpx,Laknot/libvpx,goodleixiao/vpx,kalli123/webm.libvpx,rikaunite/gst-opera_libvpx,hsueceumd/test_hui,jacklicn/webm.libvpx,mwgoldsmith/libvpx,kim42083/webm.libvpx,felipebetancur/libvpx,altogother/webm.libvpx,Topopiccione/libvpx,goodleixiao/vpx,Distrotech/libvpx,lyx2014/libvpx_c,jdm/libvpx,hsueceumd/test_hui,iniwf/webm.libvpx,zofuthan/libvpx,ittiamvpx/libvpx-1,running770/libvpx,n4t/libvpx,openpeer/libvpx_new,Laknot/libvpx,abwiz0086/webm.libvpx,rikaunite/gst-opera_libvpx,luctrudeau/aom,goodleixiao/vpx,Maria1099/webm.libvpx,vasilvv/esvp8,turbulenz/libvpx,abwiz0086/webm.libvpx,altogother/webm.libvpx,vasilvv/esvp8,ittiamvpx/libvpx,stewnorriss/libvpx,felipebetancur/libvpx,liqianggao/libvpx,cinema6/libvpx,running770/libvpx,gshORTON/webm.libvpx,jdm/libvpx,zofuthan/libvpx,enmasse-entertainment/libvpx,mwgoldsmith/vpx,sanyaade-teachings/libvpx,smarter/aom,Laknot/libvpx,charup/https---github.com-webmproject-libvpx-,jdm/libvpx,ittiamvpx/libvpx-1,smarter/aom,VTCSecureLLC/libvpx,Acidburn0zzz/webm.libvpx,mbebenita/aom,matanbs/webm.libvpx,Maria1099/webm.libvpx,matanbs/vp982,GrokImageCompression/aom,reimaginemedia/webm.libvpx,Suvarna1488/webm.libvpx,iniwf/webm.libvpx,jmvalin/aom,Distrotech/libvpx,pcwalton/libvpx,VTCSecureLLC/libvpx,shyamalschandra/libvpx,webmproject/libvpx,vasilvv/esvp8,liqianggao/libvpx,running770/libvpx,kim42083/webm.libvpx,jacklicn/webm.libvpx,abwiz0086/webm.libvpx,gshORTON/webm.libvpx,enmasse-entertainment/libvpx,altogother/webm.libvpx,Laknot/libvpx,Topopiccione/libvpx,sanyaade-teachings/libvpx,webmproject/libvpx,charup/https---github.com-webmproject-libvpx-,matanbs/vp982,altogother/webm.libvpx,abwiz0086/webm.libvpx,pcwalton/libvpx,liqianggao/libvpx,mwgoldsmith/libvpx,mbebenita/aom,WebRTC-Labs/libvpx,n4t/libvpx,GrokImageCompression/aom,lyx2014/libvpx_c,webmproject/libvpx,ittiamvpx/libvpx,luctrudeau/aom,felipebetancur/libvpx,mbebenita/aom,felipebetancur/libvpx,lyx2014/libvpx_c,kleopatra999/webm.libvpx,Suvarna1488/webm.libvpx,jdm/libvpx,lyx2014/libvpx_c,Maria1099/webm.libvpx,Topopiccione/libvpx,matanbs/vp982,mwgoldsmith/libvpx,mbebenita/aom,Distrotech/libvpx,Suvarna1488/webm.libvpx,shareefalis/libvpx,gshORTON/webm.libvpx,hsueceumd/test_hui,jacklicn/webm.libvpx,shyamalschandra/libvpx,kalli123/webm.libvpx,turbulenz/libvpx,hsueceumd/test_hui,jdm/libvpx,abwiz0086/webm.libvpx,kalli123/webm.libvpx,jacklicn/webm.libvpx,turbulenz/libvpx,ittiamvpx/libvpx-1,reimaginemedia/webm.libvpx,openpeer/libvpx_new,kim42083/webm.libvpx,jdm/libvpx,openpeer/libvpx_new,shacklettbp/aom,liqianggao/libvpx,Acidburn0zzz/webm.libvpx,matanbs/vp982,cinema6/libvpx,shareefalis/libvpx,webmproject/libvpx,kalli123/webm.libvpx,vasilvv/esvp8,shyamalschandra/libvpx,cinema6/libvpx,reimaginemedia/webm.libvpx,kim42083/webm.libvpx,stewnorriss/libvpx,shareefalis/libvpx,reimaginemedia/webm.libvpx,kleopatra999/webm.libvpx,charup/https---github.com-webmproject-libvpx-,cinema6/libvpx,ShiftMediaProject/libvpx,enmasse-entertainment/libvpx,mbebenita/aom,thdav/aom,altogother/webm.libvpx,genesi/libvpx0,VTCSecureLLC/libvpx,ittiamvpx/libvpx,Topopiccione/libvpx,sanyaade-teachings/libvpx,enmasse-entertainment/libvpx,Distrotech/libvpx,matanbs/vp982,turbulenz/libvpx,goodleixiao/vpx,Maria1099/webm.libvpx,sanyaade-teachings/libvpx,mwgoldsmith/libvpx,stewnorriss/libvpx,genesi/libvpx0,pcwalton/libvpx,stewnorriss/libvpx,turbulenz/libvpx,Laknot/libvpx,luctrudeau/aom,mbebenita/aom,ShiftMediaProject/libvpx,openpeer/libvpx_new,matanbs/vp982,genesi/libvpx0,mbebenita/aom,luctrudeau/aom,ittiamvpx/libvpx,awatry/libvpx.opencl,sanyaade-teachings/libvpx,Topopiccione/libvpx,zofuthan/libvpx,enmasse-entertainment/libvpx,ittiamvpx/libvpx,n4t/libvpx,kalli123/webm.libvpx,webmproject/libvpx,hsueceumd/test_hui,ittiamvpx/libvpx-1,shacklettbp/aom,mbebenita/aom,VTCSecureLLC/libvpx,GrokImageCompression/aom,zofuthan/libvpx,WebRTC-Labs/libvpx,jmvalin/aom,thdav/aom,jmvalin/aom,webmproject/libvpx,GrokImageCompression/aom,smarter/aom,ittiamvpx/libvpx-1,n4t/libvpx,charup/https---github.com-webmproject-libvpx-,goodleixiao/vpx,shareefalis/libvpx,genesi/libvpx0,ShiftMediaProject/libvpx,shacklettbp/aom,mwgoldsmith/vpx,pcwalton/libvpx,kleopatra999/webm.libvpx,awatry/libvpx.opencl,shareefalis/libvpx,felipebetancur/libvpx,WebRTC-Labs/libvpx,shyamalschandra/libvpx,kleopatra999/webm.libvpx,charup/https---github.com-webmproject-libvpx-,Acidburn0zzz/webm.libvpx,luctrudeau/aom,mwgoldsmith/libvpx,turbulenz/libvpx,turbulenz/libvpx,smarter/aom,vasilvv/esvp8,GrokImageCompression/aom,mwgoldsmith/vpx,WebRTC-Labs/libvpx,running770/libvpx,kleopatra999/webm.libvpx,liqianggao/libvpx,reimaginemedia/webm.libvpx,m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