ARM: mach-shmobile: Enable TMU driver build

Allow users to build the TMU driver on SH-Mobile ARM.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/arm/mach-shmobile/Kconfig b/arch/arm/mach-shmobile/Kconfig
index f2b88c5..176135f 100644
--- a/arch/arm/mach-shmobile/Kconfig
+++ b/arch/arm/mach-shmobile/Kconfig
@@ -76,6 +76,12 @@
 	help
 	  This enables build of the CMT timer driver.
 
+config SH_TIMER_TMU
+	bool "TMU timer driver"
+	default y
+	help
+	  This enables build of the TMU timer driver.
+
 endmenu
 
 endif