configs: stih410-b2260: Enable DM_USB_GADGET flag

Enable DM_USB_GADGET flag.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Marek Vasut <marex@denx.de>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Link: https://lore.kernel.org/r/20250130163547.512990-8-patrice.chotard@foss.st.com
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
diff --git a/configs/stih410-b2260_defconfig b/configs/stih410-b2260_defconfig
index 4fcbf75..5641fd1 100644
--- a/configs/stih410-b2260_defconfig
+++ b/configs/stih410-b2260_defconfig
@@ -54,6 +54,7 @@
 CONFIG_SYSRESET=y
 CONFIG_TIMER=y
 CONFIG_USB=y
+CONFIG_DM_USB_GADGET=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_USB_EHCI_HCD=y