* config/m68hc11/m68hc11.c (m68hc11_addr_mode): New variable.
	(m68hc11_mov_addr_mode): Likewise.
	(m68hc11_override_options): Initialize them based on target.
	(register_indirect_p): Allow a MEM for indirect addressing modes and
	use flags to control what is allowed.
	(m68hc11_small_indexed_indirect_p): Use m68hc11_mov_addr_mode for
	supported addressing modes.
	(m68hc11_register_indirect_p): Use m68hc11_addr_mode.
	(go_if_legitimate_address_internal): Likewise.
	(m68hc11_indirect_p): Likewise and check the mode.
	(print_operand): Allow a (MEM (MEM)) and generate indirect addressing.

From-SVN: r78792