testsuite: lto: rename pr47333 test

This was being ignored previously. Rename it per README.

gcc/testsuite/ChangeLog:
	PR target/47333

	* g++.dg/lto/pr47333.C: Move to...
	* g++.dg/lto/pr47333_0.C: ...here.

diff --git a/gcc/testsuite/g++.dg/lto/pr47333.C b/gcc/testsuite/g++.dg/lto/pr47333_0.C
similarity index 100%
rename from gcc/testsuite/g++.dg/lto/pr47333.C
rename to gcc/testsuite/g++.dg/lto/pr47333_0.C