usb: kconfig: remove dependency FSL_SOC for ehci fsl driver

CONFIG_USB_EHCI_FSL is not dependent on FSL_SOC, it can be built on
non-PPC platforms.
Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
Signed-off-by: Ran Wang <ran.wang_1@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/Kconfig

@@ -179,8 +179,7 @@ config XPS_USB_HCD_XILINX
 		devices only.
 
 config USB_EHCI_FSL
-	tristate "Support for Freescale PPC on-chip EHCI USB controller"
-	depends on FSL_SOC
+	tristate "Support for Freescale on-chip EHCI USB controller"
 	select USB_EHCI_ROOT_HUB_TT
 	---help---
 	  Variation of ARC USB block used in some Freescale chips.