Correct the formatting of `_bfd_mips_elf_compact_eh_encoding' and
`_bfd_mips_elf_cant_unwind_opcode' definitions which extend beyond 79
columns.

	bfd/
	* elfxx-mips.c (_bfd_mips_elf_compact_eh_encoding)
	(_bfd_mips_elf_cant_unwind_opcode): Correct formatting.