usb: chipidea: fix trivial typo in Kconfig

This patch fixes a trivial typo to get the module name ci_hdrc.ko correct.
Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>

drivers/usb/chipidea/Kconfig

@@ -9,7 +9,7 @@ config USB_CHIPIDEA
 	  Dual-role switch (ID, OTG FSM, sysfs), Host-only, and
 	  Peripheral-only.
 
-	  When compiled dynamically, the module will be called ci-hdrc.ko.
+	  When compiled dynamically, the module will be called ci_hdrc.ko.
 
 if USB_CHIPIDEA