Fix av1_update_eob_context()
Fix av1_update_eob_context()

lowres 0.14% gain

Change-Id: Id4d2bee555075c002b7996f0329e89c82657bfdf

GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom