HID: intel-thc: make ptl_ddata static

ptl_ddata is local to pci-quicki2c.c, so it'd better be static.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202505171535.Yrj5T8jh-lkp@intel.com/
Signed-off-by: Jiri Kosina <jkosina@suse.com>

drivers/hid/intel-thc-hid/intel-quicki2c/pci-quicki2c.c

@@ -21,7 +21,7 @@
 #include "quicki2c-hid.h"
 #include "quicki2c-protocol.h"
 
-struct quicki2c_ddata ptl_ddata = {
+static struct quicki2c_ddata ptl_ddata = {
 	.max_detect_size = MAX_RX_DETECT_SIZE_PTL,
 };