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Update T-Head memory type definitions according to C910 doc [1] For NC and IO, SH property isn't configurable, hardcoded as SH, so set SH for NOCACHE and IO. And also set bit[61](Bufferable) for NOCACHE according to the table 6.1 in the doc [1]. Link: https://github.com/T-head-Semi/openc910 [1] Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Reviewed-by: Guo Ren <guoren@kernel.org> Tested-by: Drew Fustini <dfustini@baylibre.com> Link: https://lore.kernel.org/r/20230912072510.2510-1-jszhang@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>