accel/habanalabs: add more debugfs stub helpers

Two functions got added with normal prototypes for debugfs, but not
alternative when building without it:

drivers/accel/habanalabs/common/device.c: In function 'hl_device_init':
drivers/accel/habanalabs/common/device.c:2177:14: error: implicit declaration of function 'hl_debugfs_device_init'; did you mean 'hl_debugfs_init'? [-Werror=implicit-function-declaration]
drivers/accel/habanalabs/common/device.c:2305:9: error: implicit declaration of function 'hl_debugfs_device_fini'; did you mean 'hl_debugfs_remove_file'? [-Werror=implicit-function-declaration]

Add stubs for these as well.

Fixes: 3b9abb4fa642 ("accel/habanalabs: expose debugfs files later")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Tomer Tayar <ttayar@habana.ai>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
diff --git a/drivers/accel/habanalabs/common/habanalabs.h b/drivers/accel/habanalabs/common/habanalabs.h
index d92ba2e..2f027d5 100644
--- a/drivers/accel/habanalabs/common/habanalabs.h
+++ b/drivers/accel/habanalabs/common/habanalabs.h
@@ -3980,6 +3980,15 @@
 {
 }
 
+static inline int hl_debugfs_device_init(struct hl_device *hdev)
+{
+	return 0;
+}
+
+static inline void hl_debugfs_device_fini(struct hl_device *hdev)
+{
+}
+
 static inline void hl_debugfs_add_device(struct hl_device *hdev)
 {
 }