dmaengine: constify of_device_id array

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

Signed-off-by: Fabian Frederick <[e-mail]>
Signed-off-by: Vinod Koul <[e-mail]>

drivers/dma/bestcomm/bestcomm.c

···
 #define DRIVER_NAME "bestcomm-core"
 
 /* MPC5200 device tree match tables */
-static struct of_device_id mpc52xx_sram_ids[] = {
+static const struct of_device_id mpc52xx_sram_ids[] = {
 	{ .compatible = "fsl,mpc5200-sram", },
 	{ .compatible = "mpc5200-sram", },
 	{}
···
 	return 0;
 }
 
-static struct of_device_id mpc52xx_bcom_of_match[] = {
+static const struct of_device_id mpc52xx_bcom_of_match[] = {
 	{ .compatible = "fsl,mpc5200-bestcomm", },
 	{ .compatible = "mpc5200-bestcomm", },
 	{},

drivers/dma/k3dma.c

···
 	kfree(ds);
 }
 
-static struct of_device_id k3_pdma_dt_ids[] = {
+static const struct of_device_id k3_pdma_dt_ids[] = {
 	{ .compatible = "hisilicon,k3-dma-1.0", },
 	{}
 };

drivers/dma/mmp_pdma.c

···
 	return 0;
 }
 
-static struct of_device_id mmp_pdma_dt_ids[] = {
+static const struct of_device_id mmp_pdma_dt_ids[] = {
 	{ .compatible = "marvell,pdma-1.0", },
 	{}
 };

drivers/dma/mmp_tdma.c

···
 	return dma_request_channel(mask, mmp_tdma_filter_fn, &param);
 }
 
-static struct of_device_id mmp_tdma_dt_ids[] = {
+static const struct of_device_id mmp_tdma_dt_ids[] = {
 	{ .compatible = "marvell,adma-1.0", .data = (void *)MMP_AUD_TDMA},
 	{ .compatible = "marvell,pxa910-squ", .data = (void *)PXA910_SQU},
 	{}

drivers/dma/mpc512x_dma.c

···
 	return 0;
 }
 
-static struct of_device_id mpc_dma_match[] = {
+static const struct of_device_id mpc_dma_match[] = {
 	{ .compatible = "fsl,mpc5121-dma", },
 	{ .compatible = "fsl,mpc8308-dma", },
 	{},

drivers/dma/mv_xor.c

···
 }
 
 #ifdef CONFIG_OF
-static struct of_device_id mv_xor_dt_ids[] = {
+static const struct of_device_id mv_xor_dt_ids[] = {
        { .compatible = "marvell,orion-xor", },
        {},
 };

drivers/dma/sirf-dma.c

···
 	SET_SYSTEM_SLEEP_PM_OPS(sirfsoc_dma_pm_suspend, sirfsoc_dma_pm_resume)
 };
 
-static struct of_device_id sirfsoc_dma_match[] = {
+static const struct of_device_id sirfsoc_dma_match[] = {
 	{ .compatible = "sirf,prima2-dmac", },
 	{ .compatible = "sirf,marco-dmac", },
 	{},

drivers/dma/sun6i-dma.c

···
 	.nr_max_vchans   = 37,
 };
 
-static struct of_device_id sun6i_dma_match[] = {
+static const struct of_device_id sun6i_dma_match[] = {
 	{ .compatible = "allwinner,sun6i-a31-dma", .data = &sun6i_a31_dma_cfg },
 	{ .compatible = "allwinner,sun8i-a23-dma", .data = &sun8i_a23_dma_cfg },
 	{ /* sentinel */ }