timer: Add driver for Nomadik Multi Timer Unit (MTU)

The Nomadik Multi Timer Unit (MTU) provides 4 decrementing
free-running timers. It is used in ST-Ericsson Ux500 SoCs.

The driver uses the first timer to implement UCLASS_TIMER.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/timer/Kconfig b/drivers/timer/Kconfig
index 96cc492..6370244 100644
--- a/drivers/timer/Kconfig
+++ b/drivers/timer/Kconfig
@@ -127,6 +127,15 @@
 	  hardware ways, nor got from device tree at the time when device
 	  tree is not available yet.
 
+config NOMADIK_MTU_TIMER
+	bool "Nomadik MTU Timer"
+	depends on TIMER
+	help
+	  Enables support for the Nomadik Multi Timer Unit (MTU),
+	  used in ST-Ericsson Ux500 SoCs.
+	  The MTU provides 4 decrementing free-running timers.
+	  At the moment, only the first timer is used by the driver.
+
 config OMAP_TIMER
 	bool "Omap timer support"
 	depends on TIMER