[Obvious ARM Testsuite] mangle-arm-crypto.C needs arm_crypto arguments added

[James Greenhalgh]

Hi,

g++.dg/abi/mangle-arm-crypto.C fails on some ARM targets
(see: https://gcc.gnu.org/ml/gcc-testresults/2015-01/msg01654.html ).
Much to my irritation, I can't reproduce the failures locally, but the
reason looks simple enough - you need to pass the correct flags to
enable the cypto intrinsics and instructions.

There is already a dg-add-options directive for this, so use it.

I've committed this patch as obvious as r219758, after checking it doesn't
cause any new problems on the platforms I have access to. I'll watch
Ramana's test results over the weekend to see if this fixes his bug!

Cheers,
James

---
gcc/testsuite/

2015-01-16  James Greenhalgh  <james.greenhalgh@arm.com>

	* g++.dg/abi/mangle-abi-crypto.C: Add crypto options, rather
	than Neon options.
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