Correct the name of one filter intra mode

In the codebase, rename the enum 'FILTER_D153_PRED' ->
'FILTER_D157_PRED' to match the spec.

Change-Id: I570866ff24bd402cef64858714c5edaf0216a556

av1/common/enums.h

diff --git a/av1/common/enums.h b/av1/common/enums.h
index 95e0526..ea4af49 100644
--- a/av1/common/enums.h
+++ b/av1/common/enums.h
@@ -482,7 +482,7 @@
   FILTER_DC_PRED,
   FILTER_V_PRED,
   FILTER_H_PRED,
-  FILTER_D153_PRED,
+  FILTER_D157_PRED,
   FILTER_PAETH_PRED,
   FILTER_INTRA_MODES,
 } FILTER_INTRA_MODE;

test/filterintra_test.cc

diff --git a/test/filterintra_test.cc b/test/filterintra_test.cc
index 55c19a8..4c3e33f 100644
--- a/test/filterintra_test.cc
+++ b/test/filterintra_test.cc
@@ -117,7 +117,7 @@
   make_tuple(&av1_filter_intra_predictor_c, &av1_filter_intra_predictor_sse4_1,
              FILTER_H_PRED),
   make_tuple(&av1_filter_intra_predictor_c, &av1_filter_intra_predictor_sse4_1,
-             FILTER_D153_PRED),
+             FILTER_D157_PRED),
   make_tuple(&av1_filter_intra_predictor_c, &av1_filter_intra_predictor_sse4_1,
              FILTER_PAETH_PRED),
 };