csky updates for 5.6-rc3 - Fix up cache flush implementations. - Fix up ftrace modify panic. - Fix up CONFIG_SMP boot problem. - Fix up pt_regs saving for atomic.S. - Fix up fixaddr_init without highmem. - Fix up stack protector support. - Fix up fake Tightly-Coupled Memory codes compile and use. - Fix up some typos and coding convention. The tag is tested with [1]. 1: https://gitlab.com/c-sky/buildroot/pipelines/120268254