applications: nrf_desktop: usb_state: fix SoF Kconfig dependencies

Added the missing dependency on the UDC_ENABLE_SOF Kconfig option
to the SoF synchronization Kconfig option. This Kconfig is part
of the USB state module in the nRF Desktop application.

This fix aligns the nRF Desktop with the changes introduced by
the following PR:

nrfconnect#23193

Signed-off-by: Kamil Piszczek <[email protected]>

Author: kapi-no

applications/nrf_desktop/src/modules/Kconfig.usb_state

@@ -75,6 +75,7 @@ config DESKTOP_USB_PM_RESTRICT_REMOVE_DELAY_MS
 config DESKTOP_USB_HID_REPORT_SENT_ON_SOF
 	bool "Submit HID report sent event on USB Start of Frame (SOF) [EXPERIMENTAL]"
 	default y if UDC_DRIVER_HAS_HIGH_SPEED_SUPPORT
+	select UDC_ENABLE_SOF if UDC_DRIVER
 	select EXPERIMENTAL
 	help
 	  Delay submitting hid_report_sent_event until subsequent USB Start of
@@ -87,6 +88,9 @@ config DESKTOP_USB_HID_REPORT_SENT_ON_SOF
 	  by default, because the negative impact of USB polling jitter is more
 	  visible in case of USB High-Speed.
 
+	  If you use an UDC driver, SoF interrupts must be explicitly enabled for
+	  this Kconfig option to work correctly.
+
 choice DESKTOP_USB_STACK
 	prompt "USB stack"
 	default DESKTOP_USB_STACK_LEGACY