Add with_asm and with_opencl options in the x264 recipe

[anthonyliot]

Specify library name and version: libx264/cci.20220602

Add in the two options with_asm and with_opencl. When building on Android this two flags can be required.

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Conan v1 pipeline ✔️

All green in build 2 (5a399b06c8feff8f7097f728151cea7bfbf1a6a0):

• libx264/20191217:
  All packages built successfully! (All logs)

• libx264/cci.20220602:
  All packages built successfully! (All logs)

• libx264/20190605:
  All packages built successfully! (All logs)

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Conan v2 pipeline ❌

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[valgur]

LGTM, just two minor suggestions.

It's worth noting that the OpenCL feature does not require OpenCL libraries to be present. These are only loaded at runtime, if available.

[memsharded]

PR is red due to a bug in the pipeline, but I have already sent a fix for it. I'll push this again when it is merged to get this PR to be merged. Thanks very much for your contribution, and sorry for the long delays to process this!