[patch for-3.8-rc8] usb, chipidea: fix link error when USB_EHCI_HCDis a module

[David Rientjes]

Fixes link error when USB_EHCI_HCD=m and USB_CHIPIDEA_HOST=y:

	drivers/built-in.o: In function `ci_hdrc_host_init':
	drivers/usb/chipidea/host.c:104: undefined reference to `ehci_init_driver'

as a result of commit 09f6ffde2ece ("USB: EHCI: fix build error by making
ChipIdea host a normal EHCI driver").

Cc: stable@xxxxxxxxxxxxxxx [v3.7+]
Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx>
---
 drivers/usb/chipidea/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig
--- a/drivers/usb/chipidea/Kconfig
+++ b/drivers/usb/chipidea/Kconfig
@@ -20,7 +20,7 @@ config USB_CHIPIDEA_UDC
 config USB_CHIPIDEA_HOST
 	bool "ChipIdea host controller"
 	depends on USB=y || USB=USB_CHIPIDEA
-	depends on USB_EHCI_HCD
+	depends on USB_EHCI_HCD=y
 	select USB_EHCI_ROOT_HUB_TT
 	help
 	  Say Y here to enable host controller functionality of the
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