ARM: meson: select HAVE_ARM_TWD and ARM_GLOBAL_TIMER

The 32-bit Meson SoCs use multiple Cortex-A9 (Meson8 and Meson8m2) or
Cortex-A5 (Meson8b) CPU cores. These come with the "ARM global timer"
and "Timer-Watchdog" (aka TWD, which provides both a per-cpu local timer
and watchdog).

Selecting ARM_GLOBAL_TIMER and HAVE_ARM_TWD allows us to add the timers
to the SoC.dtsi files.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

arch/arm/mach-meson/Kconfig

@@ -4,12 +4,14 @@ menuconfig ARCH_MESON
 	select GPIOLIB
 	select GENERIC_IRQ_CHIP
 	select ARM_GIC
+	select ARM_GLOBAL_TIMER
 	select CACHE_L2X0
 	select PINCTRL
 	select PINCTRL_MESON
 	select COMMON_CLK
 	select COMMON_CLK_AMLOGIC
 	select HAVE_ARM_SCU if SMP
+	select HAVE_ARM_TWD if SMP
 
 if ARCH_MESON