[ObjectYAML] Support SHT_MIPS_DWARF section type flag

Also reorder SHT_MIPS_DWARF and SHT_MIPS_ABIFLAGS in Object/ELF.cpp.
The test will be added by D58457.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@354563 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed