pinctrl: palmas: remove pin config BIAS_PULL_PIN_DEFAULT support

Palmas devices do not support the default bias configuration
and hence removing this option from valid pin config parameters.

Acked-by: Stephen Warren <[e-mail]>
Signed-off-by: Laxman Dewangan <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

Documentation/devicetree/bindings/pinctrl/pinctrl-palmas.txt

···
 
 Required: pins
 Options: function, bias-disable, bias-pull-up, bias-pull-down,
-	 bias-pin-default, drive-open-drain.
+	 drive-open-drain.
 
 Note that many of these properties are only valid for certain specific pins.
 See the Palmas device datasheet for complete details regarding which pins

drivers/pinctrl/pinctrl-palmas.c

···
 		param = pinconf_to_config_param(configs[i]);
 		param_val = pinconf_to_config_argument(configs[i]);
 
-		if (param == PIN_CONFIG_BIAS_PULL_PIN_DEFAULT)
-			continue;
-
 		switch (param) {
 		case PIN_CONFIG_BIAS_DISABLE:
 		case PIN_CONFIG_BIAS_PULL_UP: