tests/tcg: generalise the disabling of the signals test

It turns out you push down in one place and failures pop-up elsewhere.
Especially on CI. Disable for now for all targets.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

tests/tcg/hppa/Makefile.target

@@ -5,6 +5,3 @@
 # On parisc Linux supports 4K/16K/64K (but currently only 4k works)
 EXTRA_RUNS+=run-test-mmap-4096 # run-test-mmap-16384 run-test-mmap-65536
 
-# There is a race that causes this to fail about 1% of the time
-run-signals: signals
-	$(call skip-test, $<, "BROKEN awaiting vdso support")

tests/tcg/multiarch/Makefile.target

@@ -32,6 +32,12 @@ threadcount: LDFLAGS+=-lpthread
 
 signals: LDFLAGS+=-lrt -lpthread
 
+# This triggers failures on s390x hosts about 4% of the time
+# This triggers failures for hppa-linux about 1% of the time
+run-signals: signals
+	$(call skip-test, $<, "BROKEN awaiting sigframe clean-ups and vdso support")
+
+
 # We define the runner for test-mmap after the individual
 # architectures have defined their supported pages sizes. If no
 # additional page sizes are defined we only run the default test.

tests/tcg/s390x/Makefile.target

@@ -9,6 +9,3 @@ TESTS+=pack
 TESTS+=mvo
 TESTS+=mvc
 
-# This triggers failures on s390x hosts about 4% of the time
-run-signals: signals
-	$(call skip-test, $<, "BROKEN awaiting sigframe clean-ups")