ehci-fsl: add PPC_MPC837x to default y

This patch converts USB_EHCI_FSL config option into the verbose
bool, so we'll able to select it for other freescale processors
with built-in EHCI controller.
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/usb/host/Kconfig

@@ -69,10 +69,9 @@ config USB_EHCI_BIG_ENDIAN_DESC
 	default y
 
 config USB_EHCI_FSL
-	bool
-	depends on USB_EHCI_HCD
+	bool "Support for Freescale on-chip EHCI USB controller"
+	depends on USB_EHCI_HCD && FSL_SOC
 	select USB_EHCI_ROOT_HUB_TT
-	default y if PPC_MPC834x || PPC_MPC831x
 	---help---
 	  Variation of ARC USB block used in some Freescale chips.