Fix the following compilation warnings:
drivers/input/touchscreen/imagis.c:422:39: warning: ‘imagis_3038c_data’
defined but not used [-Wunused-const-variable=]
  422 | static const struct imagis_properties imagis_3038c_data = {
drivers/input/touchscreen/imagis.c:415:39: warning: ‘imagis_3038b_data’
defined but not used [-Wunused-const-variable=]
  415 | static const struct imagis_properties imagis_3038b_data = {
drivers/input/touchscreen/imagis.c:407:39: warning: ‘imagis_3038_data’
defined but not used [-Wunused-const-variable=]
  407 | static const struct imagis_properties imagis_3038_data = {
drivers/input/touchscreen/imagis.c:398:39: warning: ‘imagis_3032c_data’
defined but not used [-Wunused-const-variable=]
  398 | static const struct imagis_properties imagis_3032c_data = {
Only define the variables 'imagis_303*_data' when the CONFIG_OF
is enabled.
Fixes: 1e48ee99f603 ("Input: imagis - add supports for Imagis IST3038")
Signed-off-by: Zeng Heng <zengheng4@huawei.com>
Acked-by: Markuss Broks <markuss.broks@gmail.com>
Link: https://lore.kernel.org/r/20241023094831.1680214-1-zengheng4@huawei.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 
 
 static DEFINE_SIMPLE_DEV_PM_OPS(imagis_pm_ops, imagis_suspend, imagis_resume);
 
+#ifdef CONFIG_OF
 static const struct imagis_properties imagis_3032c_data = {
        .interrupt_msg_cmd = IST3038C_REG_INTR_MESSAGE,
        .touch_coord_cmd = IST3038C_REG_TOUCH_COORD,
        .protocol_b = true,
 };
 
-#ifdef CONFIG_OF
 static const struct of_device_id imagis_of_match[] = {
        { .compatible = "imagis,ist3032c", .data = &imagis_3032c_data },
        { .compatible = "imagis,ist3038", .data = &imagis_3038_data },