openblas: patch for +dynamic_dispatch target=aarch64

[wdconinc]

This PR adds to openblas a patch which fixes compilation for @0.3.30 +dynamic_dispatch target=aarch64.

Test builds (on arm64):

#19 128.2 ==> No binary for openblas-0.3.30-t5t22rzflemnlqgamafzxdi5rqpmraho found: installing from source
#19 129.7 ==> Fetching https://mirror.spack.io/_source-cache/archive/27/27342cff518646afb4c2b976d809102e368957974c250a25ccc965e53063c95d.tar.gz
#19 129.7 ==> Fetching https://github.com/OpenMathLib/OpenBLAS/commit/cdebb4fd4b2bbbf856e5abdcedbe9a5cf348ef8e.patch?full_index=1
#19 129.7 ==> Applied patch https://github.com/OpenMathLib/OpenBLAS/commit/cdebb4fd4b2bbbf856e5abdcedbe9a5cf348ef8e.patch?full_index=1
#19 139.1 ==> openblas: Executing phase: 'cmake'
#19 139.1 ==> openblas: Executing phase: 'build'
#19 686.6 ==> openblas: Executing phase: 'install'
#19 698.0 ==> Pushed openblas@0.3.30/t5t22rz: sha256:81a94608c1ec1da060be1cf635a3d74bd22ae9014eb2e99123dcc7d549454da7 (1.37s, 7.73 MB/s)
#19 698.0 ==> Uploading manifests
#19 699.5 ==> Tagged openblas@0.3.30/t5t22rz as ghcr.io/eic/spack-v2025.11.0:openblas-0.3.30-t5t22rzflemnlqgamafzxdi5rqpmraho.spack
#19 699.5 ==> openblas: Pushed to build cache: 'eicweb'
#19 700.6 ==> Pushed openblas@0.3.30/t5t22rz: sha256:81a94608c1ec1da060be1cf635a3d74bd22ae9014eb2e99123dcc7d549454da7 (0.10s, 105.24 MB/s)
#19 700.6 ==> Uploading manifests
#19 702.4 ==> Tagged openblas@0.3.30/t5t22rz as ghcr.io/eic/spack-v2025.11.0:openblas-0.3.30-t5t22rzflemnlqgamafzxdi5rqpmraho.spack
#19 702.4 ==> openblas: Pushed to build cache: 'ghcr'
#19 703.2 ==> openblas: Successfully installed openblas-0.3.30-t5t22rzflemnlqgamafzxdi5rqpmraho
#19 703.2   Stage: 1.46s.  Cmake: 9.37s.  Build: 9m 7.46s.  Install: 8.72s.  Post-install: 6.89s.  Total: 9m 34.11s
#19 703.2 [+] /opt/software/linux-aarch64/openblas-0.3.30-t5t22rzflemnlqgamafzxdi5rqpmraho

[Copilot]

Pull request overview

This PR adds a patch to the OpenBLAS package to fix compilation issues for version 0.3.30 when built with dynamic dispatch enabled on aarch64 (ARM64) architectures.

• Adds an upstream patch from OpenMathLib/OpenBLAS that fixes HAVE_SME setting for DYNAMIC_ARCH builds using CMake
• Applies specifically to OpenBLAS version 0.3.30 with the dynamic_dispatch variant enabled on aarch64 targets

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