aarch64: move pr113356.C under g++.target

This test requires a C++ compiler.

for gcc/testsuite/ChangeLog

	* gcc.target/aarch64/pr113356.C: Move to ...
	* g++.target/aarch64/pr113356.C: ... here.

diff --git a/gcc/testsuite/gcc.target/aarch64/pr113356.C b/gcc/testsuite/g++.target/aarch64/pr113356.C
similarity index 100%
rename from gcc/testsuite/gcc.target/aarch64/pr113356.C
rename to gcc/testsuite/g++.target/aarch64/pr113356.C