[2.6 patch] fix the USB_GADGET_DUMMY_HCD dependencies

[Adrian Bunk]

If USB=m, USB_GADGET=y, the option USB_GADGET_DUMMY_HCD mustn't be 
offered since selecting it results in a compile error.

This patch fixes kernel Bugzilla #6534 reported by Toralf Förster.

Signed-off-by: Adrian Bunk <bunk@xxxxxxxxx>

--- linux-2.6.18-rc2-mm1-full/drivers/usb/gadget/Kconfig.old	2006-07-29 03:58:25.000000000 +0200
+++ linux-2.6.18-rc2-mm1-full/drivers/usb/gadget/Kconfig	2006-07-29 03:59:15.000000000 +0200
@@ -207,7 +207,7 @@
 
 config USB_GADGET_DUMMY_HCD
 	boolean "Dummy HCD (DEVELOPMENT)"
-	depends on USB && EXPERIMENTAL
+	depends on (USB=y || (USB=m && USB_GADGET=m)) && EXPERIMENTAL
 	select USB_GADGET_DUALSPEED
 	help
 	  This host controller driver emulates USB, looping all data transfer

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