cpuidle: tegra: Enable compile testing

Enable compile testing of tegra-cpuidle driver.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>

drivers/cpuidle/Kconfig.arm

@@ -99,7 +99,7 @@ config ARM_MVEBU_V7_CPUIDLE
 
 config ARM_TEGRA_CPUIDLE
 	bool "CPU Idle Driver for NVIDIA Tegra SoCs"
-	depends on ARCH_TEGRA && !ARM64
+	depends on (ARCH_TEGRA || COMPILE_TEST) && !ARM64 && MMU
 	select ARCH_NEEDS_CPU_IDLE_COUPLED if SMP
 	select ARM_CPU_SUSPEND
 	help