[sanitizer] Update struct_kernel_stat_sz for mips32 and mipsn32

On mips32 _LARGEFILE_SOURCE and _FILE_OFFSET_BITS == 64 is used (compiler-rt/cmake/base-config-ix.cmake),
thus the correct struct_kernel_stat_sz should be 160 instead of 144.

This value is also updated for N32, since we will use
_LARGEFILE_SOURCE and _FILE_OFFSET_BITS == 64 in future.

Fix https://github.com/llvm/llvm-project/issues/55499

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D135553