x86emul: make run32 test harness goal work again

When re-working library call wrapping the sed invocation didn't account
for all sources living in the parent directory when building the 32-bit
harness binary.

Fixes: 6fba45ca3b ("x86emul: rework wrapping of libc functions in test and fuzzing harnesses")
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>

tools/tests/x86_emulator/Makefile

@@ -255,7 +255,8 @@ OBJS := x86-emulate.o cpuid.o test_x86_emulator.o evex-disp8.o predicates.o wrap
 OBJS += x86_emulate/0f01.o x86_emulate/0fae.o x86_emulate/0fc7.o
 OBJS += x86_emulate/blk.o x86_emulate/decode.o x86_emulate/fpu.o x86_emulate/util.o
 
-WRAPPED := $(shell sed -n 's,^ *WRAP(\([[:alnum:]_]*\));,\1,p' x86-emulate.h)
+WRAPPED := $(shell sed -n 's,^ *WRAP(\([[:alnum:]_]*\));,\1,p' \
+                       $(firstword $(wildcard ../x86-emulate.h) x86-emulate.h))
 
 $(TARGET): $(OBJS)
 	$(HOSTCC) $(HOSTCFLAGS) $(addprefix -Wl$(comma)--wrap=,$(WRAPPED)) -o $@ $^