efi_loader: remove unused function efi_dp_from_dev()

Function efi_dp_from_dev() is not used anywhere. Remove it.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>

include/efi_loader.h

@@ -543,7 +543,6 @@ struct efi_device_path *efi_dp_get_next_instance(struct efi_device_path **dp,
 /* Check if a device path contains muliple instances */
 bool efi_dp_is_multi_instance(const struct efi_device_path *dp);
 
-struct efi_device_path *efi_dp_from_dev(struct udevice *dev);
 struct efi_device_path *efi_dp_from_part(struct blk_desc *desc, int part);
 /* Create a device node for a block device partition. */
 struct efi_device_path *efi_dp_part_node(struct blk_desc *desc, int part);

lib/efi_loader/efi_device_path.c

@@ -422,7 +422,7 @@ bool efi_dp_is_multi_instance(const struct efi_device_path *dp)
 /* size of device-path not including END node for device and all parents
  * up to the root device.
  */
-static unsigned dp_size(struct udevice *dev)
+__maybe_unused static unsigned int dp_size(struct udevice *dev)
 {
 	if (!dev || !dev->driver)
 		return sizeof(ROOT);
@@ -494,7 +494,7 @@ static unsigned dp_size(struct udevice *dev)
  * @dev		device
  * @return	pointer to the end of the device path
  */
-static void *dp_fill(void *buf, struct udevice *dev)
+__maybe_unused static void *dp_fill(void *buf, struct udevice *dev)
 {
 	if (!dev || !dev->driver)
 		return buf;
@@ -654,20 +654,6 @@ static void *dp_fill(void *buf, struct udevice *dev)
 		return dp_fill(buf, dev->parent);
 	}
 }
-
-/* Construct a device-path from a device: */
-struct efi_device_path *efi_dp_from_dev(struct udevice *dev)
-{
-	void *buf, *start;
-
-	start = buf = dp_alloc(dp_size(dev) + sizeof(END));
-	if (!buf)
-		return NULL;
-	buf = dp_fill(buf, dev);
-	*((struct efi_device_path *)buf) = END;
-
-	return start;
-}
 #endif
 
 static unsigned dp_part_size(struct blk_desc *desc, int part)