build_intra_predictors*: reduce above_data size

currently this needs to be 2x (NEED_ABOVERIGHT) the size of the largest
block (32) + 1 (for above_left). reduce the buffer size from 128 + 16
(alignment) to 64 + 16.

Change-Id: Idaca1806c7e1214e9437de24e15edc2ebf18f95d

vp9/common/vp9_reconintra.c

diff --git a/vp9/common/vp9_reconintra.c b/vp9/common/vp9_reconintra.c
index 825d03d..d1a6474 100644
--- a/vp9/common/vp9_reconintra.c
+++ b/vp9/common/vp9_reconintra.c
@@ -658,7 +658,7 @@
   uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
   uint16_t *ref = CONVERT_TO_SHORTPTR(ref8);
   DECLARE_ALIGNED(16, uint16_t, left_col[32]);
-  DECLARE_ALIGNED(16, uint16_t, above_data[128 + 16]);
+  DECLARE_ALIGNED(16, uint16_t, above_data[64 + 16]);
   uint16_t *above_row = above_data + 16;
   const uint16_t *const_above_row = above_row;
   const int bs = 4 << tx_size;
@@ -781,7 +781,7 @@
                                    int plane) {
   int i;
   DECLARE_ALIGNED(16, uint8_t, left_col[32]);
-  DECLARE_ALIGNED(16, uint8_t, above_data[128 + 16]);
+  DECLARE_ALIGNED(16, uint8_t, above_data[64 + 16]);
   uint8_t *above_row = above_data + 16;
   const uint8_t *const_above_row = above_row;
   const int bs = 4 << tx_size;