Rename FAL driver count methods
With #56746 count methods where added to FAL drivers but the naming is not intuitive and should be changed.
[FOLLOW-UP][TASK] Rename FAL driver count methods
This changes the names of the newly added FAL driver count methods
to be more intuitive.
Since the new API wasn't published yet, this is not a breaking change.
Reviewed-by: Steffen Müller <email@example.com>
Reviewed-by: Wouter Wolters <firstname.lastname@example.org>
Reviewed-by: Frans Saris <email@example.com>
Tested-by: Steffen Müller <firstname.lastname@example.org>
Reviewed-by: Nicole Cordes <email@example.com>
Tested-by: Nicole Cordes <firstname.lastname@example.org>