drivers: timer: omap_timer: add timer driver for omap devices based on dm

Adding a timer driver for omap devices based on driver model
and device tree.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
diff --git a/drivers/timer/Kconfig b/drivers/timer/Kconfig
index 2b10d2b..ff65a73 100644
--- a/drivers/timer/Kconfig
+++ b/drivers/timer/Kconfig
@@ -30,4 +30,10 @@
 	help
 	  Select this to enable Time-Stamp Counter (TSC) timer for x86.
 
+config OMAP_TIMER
+	bool "Omap timer support"
+	depends on TIMER
+	help
+	  Select this to enable an timer for Omap devices.
+
 endmenu