Input: make i2c device ids constant

The id_table field of the struct i2c_driver is defined as constant
in <linux/i2c.h> so it makes sense to mark the initialization data also
constant.

Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/keyboard/qt2160.c b/drivers/input/keyboard/qt2160.c
index 191cc51..31f3008 100644
--- a/drivers/input/keyboard/qt2160.c
+++ b/drivers/input/keyboard/qt2160.c
@@ -362,7 +362,7 @@
 	return 0;
 }
 
-static struct i2c_device_id qt2160_idtable[] = {
+static const struct i2c_device_id qt2160_idtable[] = {
 	{ "qt2160", 0, },
 	{ }
 };
diff --git a/drivers/input/misc/apanel.c b/drivers/input/misc/apanel.c
index 71b8243..a8d2b8d 100644
--- a/drivers/input/misc/apanel.c
+++ b/drivers/input/misc/apanel.c
@@ -149,7 +149,7 @@
 	apanel_remove(client);
 }
 
-static struct i2c_device_id apanel_id[] = {
+static const struct i2c_device_id apanel_id[] = {
 	{ "fujitsu_apanel", 0 },
 	{ }
 };
diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007.c
index 7ef0d14..be23780 100644
--- a/drivers/input/touchscreen/tsc2007.c
+++ b/drivers/input/touchscreen/tsc2007.c
@@ -358,7 +358,7 @@
 	return 0;
 }
 
-static struct i2c_device_id tsc2007_idtable[] = {
+static const struct i2c_device_id tsc2007_idtable[] = {
 	{ "tsc2007", 0 },
 	{ }
 };