ARM: imx: select HAVE_ARM_ARCH_TIMER if selected i.MX7D

i.MX7D Supported ARCH Timer.
Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/mach-imx/Kconfig

@@ -561,6 +561,7 @@ config SOC_IMX7D
 	bool "i.MX7 Dual support"
 	select PINCTRL_IMX7D
 	select ARM_GIC
+	select HAVE_ARM_ARCH_TIMER
 	select HAVE_IMX_ANATOP
 	select HAVE_IMX_MMDC
 	select HAVE_IMX_SRC