(is_32bit_abs_reloc): Add support for xc16c 32-bit absolute reloc.
(is_16bit_abs_reloc): Add support for xc16c 16-bit absolute reloc.
(is_none_reloc): Add support for xc16c null reloc.
(is_32bit_abs_reloc): Add support for xc16c 32-bit absolute reloc.
(is_16bit_abs_reloc): Add support for xc16c 16-bit absolute reloc.
(is_none_reloc): Add support for xc16c null reloc.