mei: hdcp: Constify struct mei_cl_device_id

mei_hdcp_tbl[] is never modified and can be made const to allow the
compiler to put it in read-only memory.

Before:
   text    data     bss     dec     hex filename
  15844    5416       0   21260    530c drivers/misc/mei/hdcp/mei_hdcp.o

After:
   text    data     bss     dec     hex filename
  16004    5256       0   21260    530c drivers/misc/mei/hdcp/mei_hdcp.o
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Link: https://lore.kernel.org/r/20200610224704.27082-4-rikard.falkeborn@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/mei/hdcp/mei_hdcp.c

@@ -852,7 +852,7 @@ static int mei_hdcp_remove(struct mei_cl_device *cldev)
 #define MEI_UUID_HDCP GUID_INIT(0xB638AB7E, 0x94E2, 0x4EA2, 0xA5, \
 				0x52, 0xD1, 0xC5, 0x4B, 0x62, 0x7F, 0x04)
 
-static struct mei_cl_device_id mei_hdcp_tbl[] = {
+static const struct mei_cl_device_id mei_hdcp_tbl[] = {
 	{ .uuid = MEI_UUID_HDCP, .version = MEI_CL_VERSION_ANY },
 	{ }
 };