warp7: Fix the pmic_get() parameter in the DM case

When pmic_get() is used with DM the first parameter must be
the complete node name plus the unit address, so fix it
accordingly

Signed-off-by: Joris Offouga <offougajoris@gmail.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>

board/warp7/warp7.c

@@ -67,7 +67,7 @@ int power_init_board(void)
 	struct udevice *dev;
 	int ret, dev_id, rev_id;
 
-	ret = pmic_get("pfuze3000", &dev);
+	ret = pmic_get("pfuze3000@8", &dev);
 	if (ret == -ENODEV)
 		return 0;
 	if (ret != 0)