leds: leds-lp55xx: Generalize update_program_memory function

LED Driver based on lp55xx all use the same logic to write memory in
SMEM. The only difference is that legacy chip doesn't support pages and
have the engine regs one after another.

To handle this apply the same logic used for load_engine also for
update_program_memory.

Introduce a new config in device_config, base_prog. For LED chip
that doesn't support pages, offset this values of 32 for each engine.

Update all lp55xx based LED driver to use this new function and define
all the required bits.

Suggested-by: Lee Jones <lee@kernel.org>
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Link: https://lore.kernel.org/r/20240626160027.19703-9-ansuelsmth@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>

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