USB host: Adding USB ehci & ohci support for spear platform

This patch adds support for ehci and ohci controller in the SPEAr platform.

Changes since V2:
added clear_tt_buffer_complete in ehci_spear_hc_driver

Signed-off-by: Deepak Sikri <deepak.sikri@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/Kconfig

@@ -41,6 +41,7 @@ config USB_ARCH_HAS_OHCI
 	default y if MFD_TC6393XB
 	default y if ARCH_W90X900
 	default y if ARCH_DAVINCI_DA8XX
+	default y if PLAT_SPEAR
 	# PPC:
 	default y if STB03xxx
 	default y if PPC_MPC52xx
@@ -67,6 +68,7 @@ config USB_ARCH_HAS_EHCI
 	default y if ARCH_MXC
 	default y if ARCH_OMAP3
 	default y if ARCH_VT8500
+	default y if PLAT_SPEAR
 	default PCI
 
 # ARM SA1111 chips have a non-PCI based "OHCI-compatible" USB host interface.