arm: suppress aes erratum when forwarding from aes

arm: suppress aes erratum when forwarding from aes

AES operations are commonly chained and since the result of one AES
operation is never a 32-bit value, they do not need an additional
mitigation instruction for the forwarded result.  We handle this
common case by adding additional patterns that allow for this.

gcc/ChangeLog:

	* config/arm/crypto.md (crypto_<CRYPTO_AESMC:crypto_pattern>_protected):
	New pattern.
	(aarch32_crypto_aese_fused_protected): Likewise.
	(aarch32_crypto_aesd_fused_protected): Likewise.