Adjust pr24468.sh test-case for readelf with =follow-links.

Newer binutils readelf have =follow-links which is automatically
enabled with -w. This shows not only the debuginfo of the main file
but also that of the alt file referenced. This causes the pr24468.sh
to see "too many" DW_TAG_partial_units (from both files) which then
doesn't matches the number of DW_AT_imports. The fix is simply to
use -wi instead of -w since we are only interested in the .debug_info
DIEs anyway.

	* testsuite/dwz.tests/pr24468.sh: Use readelf -wi.

---
 testsuite/dwz.tests/pr24468.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/testsuite/dwz.tests/pr24468.sh b/testsuite/dwz.tests/pr24468.sh
index b03fdf9..4dac9a1 100644
--- a/testsuite/dwz.tests/pr24468.sh
+++ b/testsuite/dwz.tests/pr24468.sh
@@ -5,7 +5,7 @@ cp 1 2
 
 dwz -m 3 1 2
 
-readelf -w 1 > READELF 2>/dev/null
+readelf -wi 1 > READELF 2>/dev/null
 
 offsets=$(grep '(DW_TAG_partial_unit' READELF \
 	      | awk '{print $1}' \