tests/tcg: use EXTRA_CFLAGS everywhere

For i386 specifically, this allows using the host GCC
to compile the i386 tests.  But, it should really be
done for all targets, unless we want to pass $(EXTRA_CFLAGS)
directly as part of $(CC).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20190807143523.15917-2-pbonzini@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
diff --git a/tests/tcg/aarch64/Makefile.softmmu-target b/tests/tcg/aarch64/Makefile.softmmu-target
index 2e560e4..4c4aaf6 100644
--- a/tests/tcg/aarch64/Makefile.softmmu-target
+++ b/tests/tcg/aarch64/Makefile.softmmu-target
@@ -22,11 +22,11 @@
 .PRECIOUS: $(CRT_OBJS)
 
 %.o: $(CRT_PATH)/%.S
-	$(CC) $(CFLAGS) -x assembler-with-cpp -c $< -o $@
+	$(CC) $(CFLAGS) $(EXTRA_CFLAGS) -x assembler-with-cpp -c $< -o $@
 
 # Build and link the tests
 %: %.c $(LINK_SCRIPT) $(CRT_OBJS) $(MINILIB_OBJS)
-	$(CC) $(CFLAGS) $< -o $@ $(LDFLAGS)
+	$(CC) $(CFLAGS) $(EXTRA_CFLAGS) $< -o $@ $(LDFLAGS)
 
 memory: CFLAGS+=-DCHECK_UNALIGNED=1