[RFC PATCH pdx86-platform-drivers-x86] platform/x86: thinkpad_acpi: quirk_btusb_bug can be static

[kernel test robot]

drivers/platform/x86/thinkpad_acpi.c:317:20: warning: symbol 'quirk_btusb_bug' was not declared. Should it be static?

Fixes: 25eecc2ff6cc ("platform/x86: thinkpad_acpi: Convert btusb DMI list to quirks")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: kernel test robot <lkp@xxxxxxxxx>
---
 drivers/platform/x86/thinkpad_acpi.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index aed17d32ed84b..eefa22e86ae10 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -314,7 +314,7 @@ struct quirk_entry {
 	bool btusb_bug;
 };
 
-struct quirk_entry quirk_btusb_bug = {
+static struct quirk_entry quirk_btusb_bug = {
 	.btusb_bug = true,
 };