util: Add cpuinfo for loongarch64 tcg/loongarch64: Use cpuinfo.h tcg/loongarch64: Improve register allocation for INDEX_op_qemu_ld_a*_i128 host/include/loongarch64: Add atomic16 load and store tcg: Move expanders out of line tcg/mips: Always implement movcond tcg/mips: Implement neg opcodes tcg/loongarch64: Implement neg opcodes tcg: Make movcond and neg required opcodes tcg: Optimize env memory operations tcg: Canonicalize sub of immediate to add tcg/sparc64: Implement tcg_out_extrl_i64_i32