Fix dspr2 build.

Change-Id: I18895c29d6db872d033b3874de9dcd9501d0c10e

vp9/common/mips/dspr2/vp9_itrans16_dspr2.c

diff --git a/vp9/common/mips/dspr2/vp9_itrans16_dspr2.c b/vp9/common/mips/dspr2/vp9_itrans16_dspr2.c
index cccddc7..c4fa2a0 100644
--- a/vp9/common/mips/dspr2/vp9_itrans16_dspr2.c
+++ b/vp9/common/mips/dspr2/vp9_itrans16_dspr2.c
@@ -15,6 +15,7 @@
 #include "./vp9_rtcd.h"
 #include "vp9/common/vp9_common.h"
 #include "vp9/common/vp9_blockd.h"
+#include "vp9/common/vp9_idct.h"
 #include "vp9/common/mips/dspr2/vp9_common_dspr2.h"
 #include "vpx_dsp/txfm_common.h"
 #include "vpx_ports/mem.h"

vp9/common/mips/dspr2/vp9_itrans4_dspr2.c

diff --git a/vp9/common/mips/dspr2/vp9_itrans4_dspr2.c b/vp9/common/mips/dspr2/vp9_itrans4_dspr2.c
index 1a1afc5..a0b77f5 100644
--- a/vp9/common/mips/dspr2/vp9_itrans4_dspr2.c
+++ b/vp9/common/mips/dspr2/vp9_itrans4_dspr2.c
@@ -15,6 +15,7 @@
 #include "./vp9_rtcd.h"
 #include "vp9/common/vp9_common.h"
 #include "vp9/common/vp9_blockd.h"
+#include "vp9/common/vp9_idct.h"
 #include "vp9/common/mips/dspr2/vp9_common_dspr2.h"
 #include "vpx_dsp/txfm_common.h"
 #include "vpx_ports/mem.h"