powercap: correct kernel-doc function parameter names

powercap: correct kernel-doc function parameter names

Use the correct function parameter names in kernel-doc comments to
avoid these warnings:

Warning: include/linux/powercap.h:254 function parameter 'name' not
 described in 'powercap_register_control_type'
Warning: include/linux/powercap.h:298 function parameter 'nr_constraints'
 not described in 'powercap_register_zone'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://patch.msgid.link/20260312051444.685136-1-rdunlap@infradead.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>