accel/ivpu: Compile ivpu_debugfs.c conditionally

Only compile ivpu_debugfs.c file with CONFIG_DEBUG_FS.

Reviewed-by: Jeffrey Hugo <[e-mail]>
Signed-off-by: Stanislaw Gruszka <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/accel/ivpu/Makefile

···
 # Copyright (C) 2023 Intel Corporation
 
 intel_vpu-y := \
-	ivpu_debugfs.o \
 	ivpu_drv.o \
 	ivpu_fw.o \
 	ivpu_fw_log.o \
···
 	ivpu_mmu.o \
 	ivpu_mmu_context.o \
 	ivpu_pm.o
+
+intel_vpu-$(CONFIG_DEBUG_FS) += ivpu_debugfs.o
 
 obj-$(CONFIG_DRM_ACCEL_IVPU) += intel_vpu.o

drivers/accel/ivpu/ivpu_debugfs.h

···
 
 struct ivpu_device;
 
+#if defined(CONFIG_DEBUG_FS)
 void ivpu_debugfs_init(struct ivpu_device *vdev);
+#else
+static inline void ivpu_debugfs_init(struct ivpu_device *vdev) { }
+#endif
 
 #endif /* __IVPU_DEBUGFS_H__ */

drivers/accel/ivpu/ivpu_drv.c

···
 	if (ret)
 		return ret;
 
-#if defined(CONFIG_DEBUG_FS)
 	ivpu_debugfs_init(vdev);
-#endif
 
 	ret = drm_dev_register(&vdev->drm, 0);
 	if (ret) {