The long names of the SMCA banks are only used by the MCE decoder
module.

Move them out of the arch code and into the decoder module.

  [ bp: Name the long names array "smca_long_names", drop local ptr in
    decode_smca_error(), constify arrays. ]
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20231118193248.1296798-5-yazen.ghannam@amd.com