clk: constify of_device_id array

of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

__initdata updated to __initconst for
static const struct of_device_id ti_clkdm_match_table[]

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
diff --git a/drivers/clk/ti/clockdomain.c b/drivers/clk/ti/clockdomain.c
index b4c5fac..35fe108 100644
--- a/drivers/clk/ti/clockdomain.c
+++ b/drivers/clk/ti/clockdomain.c
@@ -52,7 +52,7 @@
 	}
 }
 
-static struct of_device_id ti_clkdm_match_table[] __initdata = {
+static const struct of_device_id ti_clkdm_match_table[] __initconst = {
 	{ .compatible = "ti,clockdomain" },
 	{ }
 };