Power/GAS: Don't set VLE annotation for non-VLE processors/instructions

Power/GAS: Don't set VLE annotation for non-VLE processors/instructions

Only set the VLE flag if the instruction has been pulled via the VLE
instruction set.  This way the flag is guaranteed to be set for VLE-only
instructions or for VLE-only processors, however it'll remain clear for
dual-mode instructions on dual-mode and, more importantly, standard-mode
processors.

	gas/
	* config/tc-ppc.c (md_assemble): Only set the PPC_APUINFO_VLE
	flag if both the processor and opcode flags match.

	ld/testsuite/
	* ld-powerpc/apuinfo-vle.rd: New test.
	* ld-powerpc/apuinfo-vle.s: New test source.
	* ld-powerpc/apuinfo.rd: Adjust according to GAS PPC_APUINFO_VLE
	handling change.
	* ld-powerpc/powerpc.exp: Run the new test.