media: rkisp1: Compile debugfs support conditionally

When CONFIG_DEBUGFS is disabled, there's no need to compile the debugfs
support in. Make it conditional.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Dafna Hirschfeld <dafna@fastmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/rockchip/rkisp1/Makefile

 # SPDX-License-Identifier: GPL-2.0
 
-obj-$(CONFIG_VIDEO_ROCKCHIP_ISP1) += rockchip-isp1.o
-rockchip-isp1-objs += 	rkisp1-capture.o \
+rockchip-isp1-y := rkisp1-capture.o \
 		   rkisp1-common.o \
-			rkisp1-debug.o \
 		   rkisp1-dev.o \
 		   rkisp1-isp.o \
 		   rkisp1-resizer.o \
 		   rkisp1-stats.o \
 		   rkisp1-params.o
+
+rockchip-isp1-$(CONFIG_DEBUG_FS) += rkisp1-debug.o
+
+obj-$(CONFIG_VIDEO_ROCKCHIP_ISP1) += rockchip-isp1.o

drivers/media/platform/rockchip/rkisp1/rkisp1-common.h

@@ -518,7 +518,16 @@ void rkisp1_stats_unregister(struct rkisp1_device *rkisp1);
 int rkisp1_params_register(struct rkisp1_device *rkisp1);
 void rkisp1_params_unregister(struct rkisp1_device *rkisp1);
 
+#if IS_ENABLED(CONFIG_DEBUG_FS)
 void rkisp1_debug_init(struct rkisp1_device *rkisp1);
 void rkisp1_debug_cleanup(struct rkisp1_device *rkisp1);
+#else
+static inline void rkisp1_debug_init(struct rkisp1_device *rkisp1)
+{
+}
+static inline void rkisp1_debug_cleanup(struct rkisp1_device *rkisp1)
+{
+}
+#endif
 
 #endif /* _RKISP1_COMMON_H */