Separate num_8x8 table use case from mode_info table

Separate the use cases of number of 8x8 blocks from those of
mode_info array. This allows the mode_info array processing to be
scaled to 4x4 resolution.

Change-Id: Iab78f2540355ce7658d9ea21e902a86f71148d8f
diff --git a/av1/encoder/aq_complexity.c b/av1/encoder/aq_complexity.c
index 5c4a5e3..cb15ff8 100644
--- a/av1/encoder/aq_complexity.c
+++ b/av1/encoder/aq_complexity.c
@@ -116,8 +116,8 @@
   const AV1_COMMON *const cm = &cpi->common;
 
   const int mi_offset = mi_row * cm->mi_cols + mi_col;
-  const int xmis = AOMMIN(cm->mi_cols - mi_col, num_8x8_blocks_wide_lookup[bs]);
-  const int ymis = AOMMIN(cm->mi_rows - mi_row, num_8x8_blocks_high_lookup[bs]);
+  const int xmis = AOMMIN(cm->mi_cols - mi_col, mi_size_wide[bs]);
+  const int ymis = AOMMIN(cm->mi_rows - mi_row, mi_size_high[bs]);
   int x, y;
   int i;
   unsigned char segment;