applications: nrf_desktop: Add LLPM dependency to HF clock lock

Change adds LLPM dependency to HF clock lock hotfix. Using LLPM
connection parameters reduces HID data latency far more significantly
than enabling the hotfix.

Jira: NCSDK-29545

Signed-off-by: Marek Pieta <Marek.Pieta@nordicsemi.no>

applications/nrf_desktop/src/modules/Kconfig.hotfixes

@@ -8,6 +8,7 @@ menu "Hotfix set"
 
 config DESKTOP_HFCLK_LOCK_ENABLE
 	bool "Keep HF clock enabled [DEPRECATED]"
+	depends on CAF_BLE_USE_LLPM
 	depends on !SOC_SERIES_NRF54HX
 	select DEPRECATED
 	help