Add : for a label in asm code
Add : for a label in asm code

Change-Id: I963d413dc83ef6684f58aab58a054f8541faeb85

luctrudeau/aom,smarter/aom,mbebenita/aom,smarter/aom,GrokImageCompression/aom,luctrudeau/aom,mbebenita/aom,luctrudeau/aom,smarter/aom,mbebenita/aom,GrokImageCompression/aom,mbebenita/aom,GrokImageCompression/aom,mbebenita/aom,smarter/aom,GrokImageCompression/aom,smarter/aom,luctrudeau/aom,mbebenita/aom,mbebenita/aom,GrokImageCompression/aom,mbebenita/aom,luctrudeau/aom,luctrudeau/aom,smarter/aom,mbebenita/aom,GrokImageCompression/aom