LoongArch: gas: Don't define LoongArch .align Gcc may generate "\t.align\t%d,54525952,4\n" before commit b20c7ee066cb7d952fa193972e8bc6362c6e4063. To write 54525952 (NOP) to object file, we call s_align_ptwo (-4). It result in alignment padding must be a multiple of 4 if .align has second parameter. Use default s_align_ptwo for .align.