add below patch from lmos

0001-add-function-load_elf_image.patch
0002-complete-the-function-kernel_exec.patch
0003-add-function-to-copy-task-argument-to-task-memory-sp.patch
0004-ready-to-implement-page-table-switch-function.patch
0005-restyle-the-code-style-and-add-function-switch_task.patch
0006-kernel-thread-can-run-after-code-refactor.patch
0007-elf-image-can-be-loaded-to-memory.patch

Signed-off-by: Le Min <lemin9538@gmail.com>