Input: qt1050 - constify struct regmap_config

`qt1050_regmap_config` is not modified and can be declared as const to
move its data to a read-only section.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://lore.kernel.org/r/20240705-input-const-regmap_config-v1-1-f712a4494883@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Author: javiercarrascocruz

drivers/input/keyboard/qt1050.c

@@ -208,7 +208,7 @@ static const struct regmap_access_table qt1050_writeable_table = {
 	.n_yes_ranges = ARRAY_SIZE(qt1050_writeable_ranges),
 };
 
-static struct regmap_config qt1050_regmap_config = {
+static const struct regmap_config qt1050_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.max_register = QT1050_RES_CAL,