ARM: firmware: enable Trusted Foundations by default

As discussed previously (https://lkml.org/lkml/2013/11/26/289), enable
Trusted Foundation support by default since it already depends on a
supporting architecture being selected.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

arch/arm/firmware/Kconfig

@@ -11,6 +11,7 @@ menu "Firmware options"
 config TRUSTED_FOUNDATIONS
 	bool "Trusted Foundations secure monitor support"
 	depends on ARCH_SUPPORTS_TRUSTED_FOUNDATIONS
+	default y
 	help
 	  Some devices (including most Tegra-based consumer devices on the
 	  market) are booted with the Trusted Foundations secure monitor