gallium/swr: Disable showing detected arch message.
When swr driver is in use it print detected architecture message to std::err. It can be harmfull when swr is using in multinodes environments. It can be enabled setting env var SWR_PRINT_INFO to 1.
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When swr driver is in use it print detected architecture message to std::err. It can be harmfull when swr is using in multinodes environments. It can be enabled setting env var SWR_PRINT_INFO to 1.