arm: Fix up arm_override_options_after_change_1

arm: Fix up arm_override_options_after_change_1

Looking further at arm_override_options_after_change_1, it also seems to be
incorrect, rather than testing
!opts->x_str_align_functions
it should be really testing
!opts_set->x_str_align_functions
and get &global_options_set or similar passed to it as additional opts_set
argument.  That is because otherwise the decision will be sticky, while it
should be done whenever use provided -falign-functions but didn't provide
-falign-functions= (either on the command line, or through optimize
attribute or pragma).

Here is a fix for that (incremental change on top of the previous patch).

2020-09-10  Jakub Jelinek  <jakub@redhat.com>

	* config/arm/arm.c (arm_override_options_after_change_1): Add opts_set
	argument, test opts_set->x_str_align_functions rather than
	opts->x_str_align_functions.
	(arm_override_options_after_change, arm_option_override_internal,
	arm_set_current_function): Adjust callers.