mfd: tps65086: Enable register view in debugfs

Previously there was no output for the regmap's registers
in debugfs due to missing "max_register" property in regmap
configuration.
Signed-off-by: Andre Werner <andre.werner@systec-electronic.com>
Link: https://lore.kernel.org/r/20231121063259.13991-1-andre.werner@systec-electronic.comSigned-off-by: Lee Jones <lee@kernel.org>

drivers/mfd/tps65086.c

@@ -36,6 +36,7 @@ static const struct regmap_config tps65086_regmap_config = {
 	.val_bits = 8,
 	.cache_type = REGCACHE_MAPLE,
 	.volatile_table = &tps65086_volatile_table,
+	.max_register = TPS65086_OC_STATUS,
 };
 
 static const struct regmap_irq tps65086_irqs[] = {