leds: pca995x: Fix MODULE_DEVICE_TABLE for OF

Fix copy-paste error in MODULE_DEVICE_TABLE() for the OF table,
use the 'of' first parameter instead of duplicate 'i2c'.

Fixes: ee4e80b2

 ("leds: pca995x: Add support for PCA995X chips")
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20230809125314.531806-1-marex@denx.de
Signed-off-by: Lee Jones <lee@kernel.org>