[MUSA] enable fp16/fast_fp16/bf16_mma on PH1

[yeahdongcn]

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Testing Done

1. Build passed (build warnings all addressed)
2. test-backend-ops all passed

   root@worker3218:/ws# MUSA_VISIBLE_DEVICES=0 ./build/bin/test-backend-ops 
   ggml_cuda_init: GGML_CUDA_FORCE_MMQ:    no
   ggml_cuda_init: GGML_CUDA_FORCE_CUBLAS: no
   ggml_cuda_init: found 1 MUSA devices:
     Device 0: MTT S5000, compute capability 3.1, VMM: yes
   Testing 2 devices
   
   Backend 1/2: MUSA0
     Device description: MTT S5000
     Device memory: 81837 MB (80980 MB free)
   
     ...
   
     7788/7788 tests passed
     Backend MUSA0: OK
   Backend 2/2: CPU
     Skipping CPU backend
   2/2 backends passed