tests/tcg: skip libsyscall.so on softmmu tests

It isn't testing anything and just expanding the runtime of testing.

Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-ID: <20250725154517.3523095-8-alex.bennee@linaro.org>

tests/tcg/Makefile.target

@@ -155,6 +155,12 @@ VPATH+=$(PLUGIN_LIB)
 # For example, libpatch.so only needs to run against the arch-specific patch
 # target test, so we explicitly run it in the arch-specific Makefile.
 DISABLE_PLUGINS=libpatch.so
+
+# Likewise don't bother with the syscall plugin for softmmu
+ifneq ($(filter %-softmmu, $(TARGET)),)
+DISABLE_PLUGINS += libsyscall.so
+endif
+
 PLUGINS=$(filter-out $(DISABLE_PLUGINS), \
 	$(patsubst %.c, lib%.so, $(notdir $(wildcard $(PLUGIN_SRC)/*.c))))