gprof: Update PR gprof/32764 test

gprof: Update PR gprof/32764 test

1. Remove gmon.out first before generating it in the configure check.
2. Make tst-gmon-gprof.out depend on the gprof binary.
3. Check that gmon.out is non-empty.
4. Don't include <sys/cdefs.h> in tst-gmon.c.

	PR gprof/32764
	* configure.ac: Remove gmon.out first.
	* configure: Regenerated.
	* testsuite/Makefile.am (tst-gmon-gprof.out): Depend on
	$(GPROF).
	* testsuite/Makefile.in: Regenerated.
	* testsuite/tst-gmon-gprof.sh: Check that gmon.out is non-empty.
	* testsuite/tst-gmon.c: Don't include <sys/cdefs.h>.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>