arm: Define __ARM_FEATURE_AES and __ARM_FEATURE_SHA2 when march +crypto is selected

arm: Define __ARM_FEATURE_AES and __ARM_FEATURE_SHA2 when march +crypto is selected

Hi all,

this patch fixes the missing definition of __ARM_FEATURE_AES and
__ARM_FEATURE_SHA2 when AES SHA1 & SHA2 crypto instructions are
available [1] (read when march +crypto is selected).

Okay for master?

Thanks

  Andrea

[1] <https://raw.githubusercontent.com/ARM-software/acle/main/main/acle.md>

gcc/ChangeLog

2022-09-14  Andrea Corallo  <andrea.corallo@arm.com>

	* config/arm/arm-c.cc (arm_cpu_builtins): Define
	__ARM_FEATURE_AES and __ARM_FEATURE_SHA2.

gcc/testsuite/ChangeLog

2022-09-14  Andrea Corallo  <andrea.corallo@arm.com>

	* gcc.target/arm/attr-crypto.c: Update test.