[Darwin, PPC, testsuite] Add requires for DFP to two tests.

The two tests use decimal floating point, add the relevant dg-requires
so that they are unsupported on platforms without DFP.

2019-06-22  Iain Sandoe  <iain@sandoe.co.uk>

	* gcc.target/powerpc/pr64205.c: Require effective target dfp.
	* gcc.target/powerpc/pr79909.c: Likewise.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@272592 138bc75d-0d04-0410-961f-82ee72b054a4
3 files changed