USB: host: st: fix ehci/ohci driver selection

The newly added sti ehci and ohci drivers come with a single
Kconfig entry that does not depend on either of the base drivers,
which leads to a link error when they are disabled:

drivers/built-in.o: In function `ohci_platform_init':
:(.init.text+0x14788): undefined reference to `ohci_init_driver'

To fix that, this patch introduces two separate Kconfig options
with proper dependencies, which avoids the problem and is also
more consistent with the other glue drivers.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: d115837259ada ("usb: host: ohci-st: Add OHCI driver support for ST STB devices")
Cc: Peter Griffin <peter.griffin@linaro.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index ae2db0b..0336bb2 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -38,6 +38,7 @@
 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-$(CONFIG_USB_EHCI_EXYNOS)	+= ehci-exynos.o
 obj-$(CONFIG_USB_EHCI_HCD_AT91) += ehci-atmel.o
 obj-$(CONFIG_USB_EHCI_MSM)	+= ehci-msm.o
@@ -55,6 +56,7 @@
 obj-$(CONFIG_USB_OHCI_HCD_OMAP1)	+= ohci-omap.o
 obj-$(CONFIG_USB_OHCI_HCD_OMAP3)	+= ohci-omap3.o
 obj-$(CONFIG_USB_OHCI_HCD_SPEAR)	+= ohci-spear.o
+obj-$(CONFIG_USB_OHCI_HCD_STI)	+= ohci-st.o
 obj-$(CONFIG_USB_OHCI_HCD_AT91)	+= ohci-at91.o
 obj-$(CONFIG_USB_OHCI_HCD_S3C2410)	+= ohci-s3c2410.o
 obj-$(CONFIG_USB_OHCI_HCD_LPC32XX)	+= ohci-nxp.o
@@ -77,4 +79,3 @@
 obj-$(CONFIG_USB_FUSBH200_HCD)	+= fusbh200-hcd.o
 obj-$(CONFIG_USB_FOTG210_HCD)	+= fotg210-hcd.o
 obj-$(CONFIG_USB_MAX3421_HCD)	+= max3421-hcd.o
-obj-$(CONFIG_USB_HCD_ST)	+= ehci-st.o ohci-st.o