kfdtest.exclude: Temporarily blacklist IPC on gfx900

Due to the recent HMM changes, the KFDIPCTest can intermittently fail,
combined with CrossMemoryAttach consistently failing. Remove it for now
while Philip Yang investigates

Change-Id: Icf272100bb7882eff4202ad6f4ced63b569f4e7d

tests/kfdtest/scripts/kfdtest.exclude

@@ -125,9 +125,10 @@ LEXA_TESTS_BLACKLIST=\
 "$SDMA_BLACKLIST"
 
 # KFDDBG.BasicAddressWatch is not supported on GFXv9 and later. FIXME: it should disable itself
+# KFDIPCTest is temporarily blacklisted due to recent HMM changes. Philip Yang is investigating
 VEGA10_TESTS_BLACKLIST=\
 "$BLACKLIST_ALL_ASICS:"\
-"KFDIPCTest.CrossMemoryAttachTest:"\
+"KFDIPCTest.*:"\
 "KFDDBGTest.BasicAddressWatch"
 
 VEGA12_TESTS_BLACKLIST=\