[llvm-objdump][AVR] Detect AVR architecture from ELF flags for disassembling (#180468) Reland #174731, resolve cyclic dependency issue. The use of LLVM_Object in LLVM_Util would cause cyclic dependency. Fix cyclic dependency by reimplement `getFeatureSetFromEFlag()`. Original description: --- This PR updates llvm-objdump to detect the specific AVR architecture from the ELF header flags when no specific CPU is provided. Fixes: https://github.com/llvm/llvm-project/issues/146451 Signed-off-by: Ruoyu Qiu <cabbaken@outlook.com>
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