omap3: Allow EHCI to be built on OMAP3

OMAP34XX has EHCI, so select USB_ARCH_HAS_EHCI.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Anand Gadiyar <gadiyar@ti.com>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index 76c11ee..10eafa7 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -18,6 +18,7 @@
 config ARCH_OMAP34XX
 	bool "OMAP34xx Based System"
 	depends on ARCH_OMAP3
+	select USB_ARCH_HAS_EHCI
 
 config ARCH_OMAP3430
 	bool "OMAP3430 support"