dm: pmic: add "addr" field for binding children

If some child info->prefix are the same, try to
distinguish them by parent addr.

Example:
	pmic@20, pmic@1a...

Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Change-Id: I504cd887e232bb309d8e1790f6d55910172d08b5

drivers/power/pmic/pmic-uclass.c

@@ -64,6 +64,17 @@ int pmic_bind_children(struct udevice *pmic, ofnode parent,
 					continue;
 			}
 
+			/*
+			 * If some child info->prefix are the same, try to
+			 * distinguish them by parent addr.
+			 *
+			 * Example: pmic@20, pmic@1a...
+			 */
+			if (info->addr) {
+				if (!strstr(dev_read_name(pmic), info->addr))
+					continue;
+			}
+
 			drv = lists_driver_lookup_name(info->driver);
 			if (!drv) {
 				debug("  - driver: '%s' not found!\n",

include/power/pmic.h

@@ -189,6 +189,7 @@ enum pmic_op_type {
  * @driver - driver name for the sub-node with prefix
  */
 struct pmic_child_info {
+	const char *addr;
 	const char *prefix;
 	const char *driver;
 };