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amd: require radeon 2.50.0 or amdgpu 3.15.0 (kernel 4.12), clean up radeon_info, print better device info

Marek Olšák requested to merge mareko/mesa:amd-info-cleanup into main

This is the new output with AMD_DEBUG=info:

Device info:
    name = NAVI23
    marketing_name = AMD Radeon RX 6600
    num_se = 2
    num_rb = 8
    num_cu = 28
    max_gpu_freq = 2750 MHz
    max_gflops = 9856 GFLOPS
    l0_cache_size = 16 KB
    l1_cache_size = 128 KB
    l2_cache_size = 2048 KB
    l3_cache_size = 32 MB
    memory_channels = 8 (TCC blocks)
    memory_size = 8 GB (8192 MB)
    memory_freq = 14 GHz
    memory_bus_width = 128 bits
    memory_bandwidth = 224 GB/s
    clock_crystal_freq = 100000 KHz
    IP GFX     10.3 	queues:1
    IP COMP    10.3 	queues:4
    IP SDMA     5.2 	queues:2
    IP VCN_DEC  3.0 	queues:1
    IP VCN_ENC  3.0 	queues:1
    IP VCN_JPG  3.0 	queues:1

I would be interested to know what the output looks like on a GPU with disabled memory channels. Mostly just to determine if the memory fields are correct.

Edited by Marek Olšák

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