leds: lm3692x: Fix kernel-doc for struct lm3692x_led

leds: lm3692x: Fix kernel-doc for struct lm3692x_led

Building with W=1 reports several kernel-doc warnings in
drivers/leds/leds-lm3692x.c:

  Warning: leds-lm3692x.c:122 struct member 'boost_ctrl'
  not described in 'lm3692x_led'
  Warning: leds-lm3692x.c:122 struct member 'brightness_ctrl'
  not described in 'lm3692x_led'
  Warning: leds-lm3692x.c:122 struct member 'enabled'
  not described in 'lm3692x_led'

These fields were added to struct lm3692x_led but the corresponding
kernel-doc comment was not updated. Convert the kernel-doc block to
use the "@member: description" style consistently and document the
boost_ctrl, brightness_ctrl and enabled fields.

This keeps the documentation in sync with the implementation and
silences the W=1 warnings.

Signed-off-by: Vivek BalachandharTN <vivek.balachandhar@gmail.com>
Link: https://patch.msgid.link/20251201042612.2099239-1-vivek.balachandhar@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>