fate: add idct8x8 test

This tests the IDCT implementations available in the build.
Signed-off-by: NMans Rullgard <mans@mansr.com>

tests/Makefile

@@ -41,6 +41,7 @@ include $(SRC_PATH)/tests/fate/aac.mak
 include $(SRC_PATH)/tests/fate/als.mak
 include $(SRC_PATH)/tests/fate/amrnb.mak
 include $(SRC_PATH)/tests/fate/amrwb.mak
+include $(SRC_PATH)/tests/fate/dct.mak
 include $(SRC_PATH)/tests/fate/fft.mak
 include $(SRC_PATH)/tests/fate/h264.mak
 include $(SRC_PATH)/tests/fate/libavutil.mak

tests/fate/dct.mak

+FATE_TESTS += fate-idct8x8
+fate-idct8x8: libavcodec/dct-test$(EXESUF)
+fate-idct8x8: CMD = run libavcodec/dct-test -i
+fate-idct8x8: REF = /dev/null
+fate-idct8x8: CMP = null