Misc. bug: Rpc-server does not use opencl backend on Android.

[belog2867]

Name and Version

ggml_opencl: using kernels optimized for Adreno (GGML_OPENCL_USE_ADRENO_KERNELS) version: 4727 (c2ea16f2) built with Android (11349228, +pgo, +bolt, +lto, -mlgo, based on r487747e) clang version 17.0.2 (https://android.googlesource.com/toolchain/llvm-project d9f89f4d16663d5012e5c09495f3b30ece3d2362) for x86_64-unknown-linux-gnu

Operating systems

Other? (Please let us know in description)

Which llama.cpp modules do you know to be affected?

Other (Please specify in the next section)

Command line

./rpc-server --port 8880

Starting RPC server on 127.0.0.1:8880, backend memory: 15160 MB

Problem description & steps to reproduce

If you use vulkan, it can be used normally in Android, but opencl will prompt that you are using the cpu backend.

Llama-cli can use gpu when using opencl.

First Bad Commit

No response

Relevant log output

create_backend: using CPU backend