mfd: max77759: Improve static struct formatting and commentary

mfd: max77759: Improve static struct formatting and commentary

Improve code style. This includes the following:
- Formatting the max77759_chgr_irqs entries to fit in a single line
  instead of breaking them into multiple lines to improve readability.

- Refactoring comments such that they're full sentences and have
  punctuation marks for a couple of macro definitions to adhere to the
  documentation style.

- Explicitly initializing `MAX77759_CHGR_MODE_OFF`.

Signed-off-by: Amit Sunil Dhamne <amitsd@google.com>
Link: https://patch.msgid.link/20260504-fix-mfd-max77759-driver-v1-1-4d4a31a1d214@google.com
Signed-off-by: Lee Jones <lee@kernel.org>