configs: migrate CONFIG_SET_DFU_ALT_INFO to defconfigs

Move CONFIG_SET_DFU_ALT_INFO into Kconfig done by moveconfig.py.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Acked-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
diff --git a/drivers/dfu/Kconfig b/drivers/dfu/Kconfig
index 174fb58..5d45d7d 100644
--- a/drivers/dfu/Kconfig
+++ b/drivers/dfu/Kconfig
@@ -81,5 +81,10 @@
 	  used at board level to manage specific behavior
 	  (OTP update for example).
 
+config SET_DFU_ALT_INFO
+	bool "Dynamic set of DFU alternate information"
+	help
+	  This option allows to call the function set_dfu_alt_info to
+	  dynamically build dfu_alt_info in board.
 endif
 endmenu