Remove option_default_params and option_validate_param hooks.

Remove option_default_params and option_validate_param hooks.

2019-11-12  Martin Liska  <mliska@suse.cz>

	* common/common-target.def: Remove option_validate_param and
	option_default_params.
	* common/common-targhooks.c (default_option_validate_param):
	Remove.
	* common/common-targhooks.h (default_option_validate_param):
	Remove.
	* common/config/aarch64/aarch64-common.c (TARGET_OPTION_DEFAULT_PARAMS):
	Remove usage of this.
	(TARGET_OPTION_VALIDATE_PARAM): Likewise.
	(aarch64_option_validate_param): Likewise.
	(aarch64_option_default_params): Likewise
	* common/config/bpf/bpf-common.c (bpf_option_default_params): Likewise.
	(TARGET_OPTION_DEFAULT_PARAMS): Likewise.
	* common/config/ia64/ia64-common.c (ia64_option_default_params): Likewise.
	(TARGET_OPTION_DEFAULT_PARAMS): Likewise.
	* common/config/powerpcspe/powerpcspe-common.c (rs6000_option_default_params): Likewise.
	(TARGET_OPTION_DEFAULT_PARAMS): Likewise.
	* common/config/rs6000/rs6000-common.c (rs6000_option_default_params): Likewise.
	(TARGET_OPTION_DEFAULT_PARAMS): Likewise.
	* common/config/sh/sh-common.c (sh_option_default_params): Likewise.
	(TARGET_OPTION_DEFAULT_PARAMS): Likewise.
	* config/aarch64/aarch64.c (aarch64_override_options_internal): Validate
	guard_size here.
	* doc/tm.texi: Remove option_default_params and option_validate_param.
	* doc/tm.texi.in: Likewise.

From-SVN: r278090