USB: host: st: fix typo 'CONFIG_USB_EHCI_HCD_ST'

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Fixes: 905e300e1043 ("USB: host: st: fix ehci/ohci driver selection")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/Makefile

@@ -38,7 +38,7 @@ obj-$(CONFIG_USB_EHCI_MXC)	+= ehci-mxc.o
 obj-$(CONFIG_USB_EHCI_HCD_OMAP)	+= ehci-omap.o
 obj-$(CONFIG_USB_EHCI_HCD_ORION)	+= ehci-orion.o
 obj-$(CONFIG_USB_EHCI_HCD_SPEAR)	+= ehci-spear.o
-obj-$(CONFIG_USB_EHCI_HCD_ST)	+= ehci-st.o
+obj-$(CONFIG_USB_EHCI_HCD_STI)	+= ehci-st.o
 obj-$(CONFIG_USB_EHCI_EXYNOS)	+= ehci-exynos.o
 obj-$(CONFIG_USB_EHCI_HCD_AT91) += ehci-atmel.o
 obj-$(CONFIG_USB_EHCI_MSM)	+= ehci-msm.o