* m32c.opc (parse_unsigned_bitbase): Take a new parameter which

decides if this function accepts symbolic constants or not.
(parse_signed_bitbase): Likewise.
(parse_unsigned_bitbase8): Pass the new parameter.
(parse_unsigned_bitbase11): Likewise.
(parse_unsigned_bitbase16): Likewise.
(parse_unsigned_bitbase19): Likewise.
(parse_unsigned_bitbase27): Likewise.
(parse_signed_bitbase8): Likewise.
(parse_signed_bitbase11): Likewise.
(parse_signed_bitbase19): Likewise.
* m32c-asm.c: Regenerate.