capitalize Sys.CPU_NAME

This was the only value exported from Sys with a lowercase name –
all other lowercase exports are functions and values are uppercase.

base/deprecated.jl

@@ -2164,6 +2164,9 @@ end
 @deprecate parse(str::AbstractString, pos::Int, ; kwargs...) Meta.parse(str, pos; kwargs...)
 @deprecate_binding ParseError Meta.ParseError
 
+# issue #20899
+# TODO: delete cpu_name deprecation in base/sysinfo.jl
+
 @eval LinAlg begin
     @deprecate chol!(x::Number, uplo) chol(x) false
 end

base/interactiveutil.jl

@@ -311,7 +311,7 @@ function versioninfo(io::IO=STDOUT; verbose::Bool=false, packages::Bool=false)
     end
     println(io, "  LAPACK: ",liblapack_name)
     println(io, "  LIBM: ",libm_name)
-    println(io, "  LLVM: libLLVM-",libllvm_version," (", Sys.JIT, ", ", Sys.cpu_name, ")")
+    println(io, "  LLVM: libLLVM-",libllvm_version," (", Sys.JIT, ", ", Sys.CPU_NAME, ")")
 
     println(io, "Environment:")
     for (k,v) in ENV

base/sysinfo.jl

@@ -6,13 +6,13 @@ Provide methods for retrieving information about hardware and the operating syst
 """ -> Sys
 
 export CPU_CORES,
+       CPU_NAME,
        WORD_SIZE,
        ARCH,
        MACHINE,
        KERNEL,
        JIT,
        cpu_info,
-       cpu_name,
        cpu_summary,
        uptime,
        loadavg,
@@ -71,8 +71,9 @@ function __init__()
         haskey(ENV,"JULIA_CPU_CORES") ? parse(Int,ENV["JULIA_CPU_CORES"]) :
                                         Int(ccall(:jl_cpu_cores, Int32, ()))
     global SC_CLK_TCK = ccall(:jl_SC_CLK_TCK, Clong, ())
-    global cpu_name = ccall(:jl_get_cpu_name, Ref{String}, ())
+    global CPU_NAME = ccall(:jl_get_cpu_name, Ref{String}, ())
     global JIT = ccall(:jl_get_JIT, Ref{String}, ())
+    @eval @Base.deprecate_binding cpu_name CPU_NAME
 end
 
 mutable struct UV_cpu_info_t