pinctrol: dm: remove the function pinctrl_decode_pin_config

Remove the pinctrl_decode_pin_config() API, because this
function is unused and not compatible with livetree
(it uses fdtdec_get_bool instead of ofnode API).

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

drivers/pinctrl/pinctrl-uclass.c

@@ -15,18 +15,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-int pinctrl_decode_pin_config(const void *blob, int node)
-{
-	int flags = 0;
-
-	if (fdtdec_get_bool(blob, node, "bias-pull-up"))
-		flags |= 1 << PIN_CONFIG_BIAS_PULL_UP;
-	else if (fdtdec_get_bool(blob, node, "bias-pull-down"))
-		flags |= 1 << PIN_CONFIG_BIAS_PULL_DOWN;
-
-	return flags;
-}
-
 #if CONFIG_IS_ENABLED(PINCTRL_FULL)
 /**
  * pinctrl_config_one() - apply pinctrl settings for a single node

include/dm/pinctrl.h

@@ -369,19 +369,6 @@ int pinctrl_request_noflags(struct udevice *dev, int func);
  */
 int pinctrl_get_periph_id(struct udevice *dev, struct udevice *periph);
 
-/**
- * pinctrl_decode_pin_config() - decode pin configuration flags
- *
- * This decodes some of the PIN_CONFIG values into flags, with each value
- * being (1 << pin_cfg). This does not support things with values like the
- * slew rate.
- *
- * @blob:	Device tree blob
- * @node:	Node containing the PIN_CONFIG values
- * @return decoded flag value, or -ve on error
- */
-int pinctrl_decode_pin_config(const void *blob, int node);
-
 /**
  * pinctrl_get_gpio_mux() - get the mux value for a particular GPIO
  *