Support Armv8.5 RNDR as prediction resistance

[torben-hansen]

Description of changes:

Adds Arm as a hardware source for prediction resistance, if supported. This covers Linux+Armv8.5-A that impements rndr. For exmaple, this should be enabled on Graviton3/Graviton4+Amazon Linux.

Note, only multiples of 8 are supported. That's what we need now and I don't see that need changing.

Call-outs:

Wrap the libcrypto inlined functions to workaround the Arm capability vector having internal linkage.

Apple doesn't implement FEAT_RNG on any of their M's. Might be able to implement for Windows. But I don't see a way to probe for the instruction here https://learn.microsoft.com/en-us/windows/win32/api/processthreadsapi/nf-processthreadsapi-isprocessorfeaturepresent.

Added s3_3_c2_c4_0 as a known symbol to the delocator to avoid it from interpreting the string as an external symbol that needs a trampoline... It's not really a symbol... And this was the quickest way to move forward.

Testing:

Tested that the function is executed successfully on a Graviton3 instance. This might also be executed through codebuild depending on which instances are spawned.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license and the ISC license.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 89.65517% with 3 lines in your changes missing coverage. Please review.

Project coverage is 78.72%. Comparing base (2459c63) to head (c40df9c).

Files with missing lines	Patch %	Lines
crypto/fipsmodule/rand/entropy/entropy_sources.c	72.72%	3 Missing ⚠️

Additional details and impacted files

@@                  Coverage Diff                   @@
##           randomness_generation    #2029   +/-   ##
======================================================
  Coverage                  78.71%   78.72%           
======================================================
  Files                        606      608    +2     
  Lines                     102759   102774   +15     
  Branches                   14578    14582    +4     
======================================================
+ Hits                       80887    80908   +21     
+ Misses                     21161    21156    -5     
+ Partials                     711      710    -1     

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