Fix scummvm ARM build (turn off assembly for NaCl, for now).
Fix scummvm ARM build (turn off assembly for NaCl, for now).

BUG=none
TBR=sbc@chromium.org

Review URL: https://codereview.chromium.org/47303003

git-svn-id: 84b3587ce119b778414dcb50e18b7479aacf4f1d@942 7dad1e8b-422e-d2af-fbf5-8013b78bd812

adlr/naclports,kosyak/naclports_samsung-smart-tv,adlr/naclports,Schibum/naclports,clchiou/naclports,yeyus/naclports,clchiou/naclports,Schibum/naclports,yeyus/naclports,yeyus/naclports,kuscsik/naclports,yeyus/naclports,dtkav/naclports,kuscsik/naclports,binji/naclports,dtkav/naclports,Schibum/naclports,binji/naclports,kosyak/naclports_samsung-smart-tv,binji/naclports,clchiou/naclports,kuscsik/naclports,dtkav/naclports,adlr/naclports,dtkav/naclports,clchiou/naclports,Schibum/naclports,dtkav/naclports,binji/naclports,kosyak/naclports_samsung-smart-tv,yeyus/naclports,kosyak/naclports_samsung-smart-tv,kuscsik/naclports,kosyak/naclports_samsung-smart-tv,yeyus/naclports,clchiou/naclports,adlr/naclports,kuscsik/naclports,Schibum/naclports,adlr/naclports,binji/naclports,Schibum/naclports