[PATCH 4/4] mtk-mdp: fix compilation warnings if !DEBUG

[Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>]

The mtk_mdp_dbg() is empty if !DEBUG. This causes the following
warnings:

	drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c: In function ‘mtk_mdp_try_fmt_mplane’:
	drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c:231:52: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]
	        org_w, org_h, pix_mp->width, pix_mp->height);
                                                    ^
	drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c: In function ‘mtk_mdp_m2m_start_streaming’:
	drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c:414:21: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]
	        ctx->id, ret);
	                     ^

With could actually make the code to do something wrong. So,
add an empty block to make it be parsed ok.

Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
---
 drivers/media/platform/mtk-mdp/mtk_mdp_core.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_core.h b/drivers/media/platform/mtk-mdp/mtk_mdp_core.h
index 2e979f97d1df..848569d4ab90 100644
--- a/drivers/media/platform/mtk-mdp/mtk_mdp_core.h
+++ b/drivers/media/platform/mtk-mdp/mtk_mdp_core.h
@@ -250,7 +250,7 @@ extern int mtk_mdp_dbg_level;
 
 #else
 
-#define mtk_mdp_dbg(level, fmt, args...)
+#define mtk_mdp_dbg(level, fmt, args...) {}
 #define mtk_mdp_err(fmt, args...)
 #define mtk_mdp_dbg_enter()
 #define mtk_mdp_dbg_leave()
-- 
2.7.4

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