[ALPS02870048] BT Driver: Fix build error with disable DEBUG_FS

Test: Pass

Change-Id: I5c2eea76b062f63e5ebad24adaa1d5d90a12dfca
Signed-off-by: can.chen <can.chen@mediatek.com>
Feature: BT Driver(MT7668)
CR-Id: ALPS02870048
1 file changed