leds: is31fl319x: Fix setting current limit for is31fl319{0,1,3}

The current setting lives in bits 4:2 (as also defined by the mask) but
the current limit defines in the driver use bits 2:0 which should be
shifted over so they don't get masked out completely (except for 17.5mA
which became 10mA).

Now checking /sys/kernel/debug/regmap/1-0068/registers shows that the
current limit is applied correctly and doesn't take the default b000 =
42mA.

Fixes: fa877cf ("leds: is31fl319x: Add support for is31fl319{0,1,3} chips")
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Reviewed-by: Vincent Knecht <vincent.knecht@mailoo.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>

Author: z3ntu

drivers/leds/leds-is31fl319x.c

@@ -38,6 +38,7 @@
 #define IS31FL3190_CURRENT_uA_MIN	5000
 #define IS31FL3190_CURRENT_uA_DEFAULT	42000
 #define IS31FL3190_CURRENT_uA_MAX	42000
+#define IS31FL3190_CURRENT_SHIFT	2
 #define IS31FL3190_CURRENT_MASK		GENMASK(4, 2)
 #define IS31FL3190_CURRENT_5_mA		0x02
 #define IS31FL3190_CURRENT_10_mA	0x01
@@ -553,7 +554,7 @@ static int is31fl319x_probe(struct i2c_client *client)
 			     is31fl3196_db_to_gain(is31->audio_gain_db));
 	else
 		regmap_update_bits(is31->regmap, IS31FL3190_CURRENT, IS31FL3190_CURRENT_MASK,
-				   is31fl3190_microamp_to_cs(dev, aggregated_led_microamp));
+				   is31fl3190_microamp_to_cs(dev, aggregated_led_microamp) << IS31FL3190_CURRENT_SHIFT);
 
 	for (i = 0; i < is31->cdef->num_leds; i++) {
 		struct is31fl319x_led *led = &is31->leds[i];