[PATCH] staging: atomisp: ov2680: constify acpi_device_id.

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acpi_device_id are not supposed to change at runtime. All functions
working with acpi_device_id provided by <acpi/acpi_bus.h> work with
const acpi_device_id. So mark the non-const structs as const.

File size before:
   text	   data	    bss	    dec	    hex	filename
  12466	   3120	      8	  15594	   3cea drivers/staging/media/atomisp/i2c/ov2680.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
  12530	   3056	      8	  15594	   3cea drivers/staging/media/atomisp/i2c/ov2680.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx>
---
 drivers/staging/media/atomisp/i2c/ov2680.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/media/atomisp/i2c/ov2680.c b/drivers/staging/media/atomisp/i2c/ov2680.c
index 5660910..9671876 100644
--- a/drivers/staging/media/atomisp/i2c/ov2680.c
+++ b/drivers/staging/media/atomisp/i2c/ov2680.c
@@ -1519,7 +1519,7 @@ static int ov2680_probe(struct i2c_client *client,
 	return ret;
 }
 
-static struct acpi_device_id ov2680_acpi_match[] = {
+static const struct acpi_device_id ov2680_acpi_match[] = {
 	{"XXOV2680"},
 	{},
 };
-- 
2.7.4

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