fastrpc-test: Add runtime validation and remove SoC-based filtering

[anankulk]

Summary

Replace hardcoded SoC-level filtering with runtime validation to enable
FastRPC testing on QRB2210 and Glymur CRD.

• SoC filtering removed: the hardcoded skip for QRB2210/Glymur CRD and the
  per-SoC GPDSP0/GPDSP1 blacklist (QCS9075, QCS8275, QCS8300, QCS9100) are
  replaced entirely by runtime domain discovery via DT/remoteproc
• Artifact gates: execution is gated on FastRPC system libraries
  (libadsprpc/libcdsprpc/libsdsprpc), DSP skeletons (v75/v68), and
  test libraries (libcalculator/libhap_example/libmultithreading) being
  present; missing artifacts produce a clean SKIP instead of a runtime failure;
  test library detection uses glob matching to handle versioned Debian installs
• Endpoint detection: domain_to_endpoint_label() maps domain numbers to
  their DT binding labels (GPDSP0/1 → gdsp0/gdsp1);
  fastrpc_domain_endpoint_available() checks both /dev/fastrpc-<label> and
  /dev/fastrpc-<label>-secure so secure-only domains are not incorrectly filtered
• Failure semantics: explicitly selected domains (--domain / --domain-name
  / single mode) with no usable endpoint produce FAIL with remoteproc diagnostics;
  auto-discovered domains with a missing endpoint emit a warning visible without
  --verbose and dump remoteproc state before the all-domain SKIP
• Cleanup: only_hap_example_failed() and the SM8850 libhap_example
  exception are removed so results are reported consistently across all targets

Files changed

• Runner/suites/Multimedia/CDSP/fastrpc_test/run.sh
• Runner/utils/lib_fastrpc.sh
• Runner/suites/Multimedia/CDSP/fastrpc_test/fastrpc_test.yaml

[Srikanth Muppandam (smuppand)]

only_hap_example_failed() now has no callers and still documents the SM8850 exception being removed. Remove the function and obsolete comment in this PR.

[Srikanth Muppandam (smuppand)]

soc_skip_all is initialized to 0 but can no longer become 1.Remove soc_skip_all and its block at lines 251–255 rename the section to describe the remaining GPDSP filter.

[anankulk]

Hi Srikanth Muppandam (@smuppand),

With the upcoming tag to be released for fastrpc recipe : we are enabling gpdsp test support as-well.
Once the tag is released, will address the comments and enable gdsp as-well along with the on-going changes.

[Srikanth Muppandam (smuppand)]

With these new changes, you have to fix the following code as well.

Runner/utils/lib_fastrpc.sh:151 — artifact discovery validates generic directories, not FastRPC artifacts

• Issue: FASTRPC_RESOLVED_LIB_SYS_DIR becomes /usr/lib whenever that directory exists. Likewise, the runner checks FASTRPC_RESOLVED_SKEL_BASE,
  although the base can exist without either v75 or v68. FASTRPC_RESOLVED_LIB_TEST_DIR is discovered but never required.

• Recommended fix: Resolve and validate the actual required library files, require a non-empty FASTRPC_RESOLVED_SKEL_PATH, and validate the required
  test-library artifacts rather than generic directories.

Runner/suites/Multimedia/CDSP/fastrpc_test/fastrpc_test.yaml:11 — YAML still documents removed GPDSP filtering

• Issue: The description says GPDSP domains are skipped on QCS9075/QCS8275/QCS8300/QCS9100, while the PR removes that blacklist.
• Recommended fix: Describe runtime domain and endpoint discovery instead.

Runner/suites/Multimedia/CDSP/fastrpc_test/run.sh:188 — remove unused SOC_MACHINE

• Recommended fix: Remove the assignment.

[Srikanth Muppandam (smuppand)]

anankulk Please address the pending comments too