watchdog: mei_wdt: constify mei_cl_device_id

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

Signed-off-by: Arvind Yadav <[e-mail]>
Reviewed-by: Guenter Roeck <[e-mail]>
Signed-off-by: Guenter Roeck <[e-mail]>
Signed-off-by: Wim Van Sebroeck <[e-mail]>

drivers/watchdog/mei_wdt.c

···
 #define MEI_UUID_WD UUID_LE(0x05B79A6F, 0x4628, 0x4D7F, \
 			    0x89, 0x9D, 0xA9, 0x15, 0x14, 0xCB, 0x32, 0xAB)
 
-static struct mei_cl_device_id mei_wdt_tbl[] = {
+static const struct mei_cl_device_id mei_wdt_tbl[] = {
 	{ .uuid = MEI_UUID_WD, .version = MEI_CL_VERSION_ANY },
 	/* required last entry */
 	{ }