[vp9] Fix handling of skip in row_mt=1

For row_mt=1, when mi->skip is set to 1 after parse based on
eobtotal for that partition, dqcoeff and eob need to be restored
as recon_partition doesn't increment these pointers for skip cases

Change-Id: I79711b0c175937aa6da3bba3b3bc053f91a8ce35
1 file changed