usb: Introduce CONFIG_SPL_DM_USB
This allows building the SPL without driver model for USB. Since
CONFIG_SPL_DM_USB is enabled if and only if CONFIG_DM_USB was enabled
before, this patch does not change the build behaviour.
Signed-off-by: Sven Schwermer <sven@svenschwermer.de>
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index 4fbe172..03746dd 100644
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -47,6 +47,11 @@
declared with the U_BOOT_USB_DEVICE() macro and will be
automatically probed when found on the bus.
+config SPL_DM_USB
+ bool "Enable driver model for USB in SPL"
+ depends on DM_USB
+ default y
+
source "drivers/usb/host/Kconfig"
source "drivers/usb/dwc3/Kconfig"