Make get_eob() function static.

Change-Id: Idde3ab97960eda7022367c1f91a873a479bc9d7b

vp9/decoder/detokenize.c

@@ -246,8 +246,7 @@ SKIP_START:
   return c;
 }
 
-
-int get_eob(MACROBLOCKD* const xd, int segment_id, int eob_max) {
+static int get_eob(MACROBLOCKD* const xd, int segment_id, int eob_max) {
   int active = vp9_segfeature_active(xd, segment_id, SEG_LVL_EOB);
   int eob = vp9_get_segdata(xd, segment_id, SEG_LVL_EOB);