Fix elf/tst-audit25a with default bind now toolchains

This test relies on lazy binding for the executable so request that
explicitly in case the toolchain defaults to bind now.

elf/Makefile

@@ -2227,6 +2227,7 @@ $(objpfx)tst-audit25a: $(objpfx)tst-audit25mod1.so \
 		       $(objpfx)tst-audit25mod2.so \
 		       $(objpfx)tst-audit25mod3.so \
 		       $(objpfx)tst-audit25mod4.so
+LDFLAGS-tst-audit25a = -Wl,-z,lazy
 $(objpfx)tst-audit25mod1.so: $(objpfx)tst-audit25mod3.so
 LDFLAGS-tst-audit25mod1.so = -Wl,-z,now
 $(objpfx)tst-audit25mod2.so: $(objpfx)tst-audit25mod4.so