drm/vc4: fix include notation and remove -Iinclude/drm flag

Include <drm/*.h> instead of relative path from include/drm, then
remove the -Iinclude/drm compiler flag.

While we are here, use <...> instead of "..." for include/linux/*.h
and include/sound/*.h headers too.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1495081793-9707-2-git-send-email-yamada.masahiro@socionext.com
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 3c2723f6..ed63d4e 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -42,21 +42,21 @@
  * encoder block has CEC support.
  */
 
-#include "drm_atomic_helper.h"
-#include "drm_crtc_helper.h"
-#include "drm_edid.h"
-#include "linux/clk.h"
-#include "linux/component.h"
-#include "linux/i2c.h"
-#include "linux/of_address.h"
-#include "linux/of_gpio.h"
-#include "linux/of_platform.h"
-#include "linux/pm_runtime.h"
-#include "linux/rational.h"
-#include "sound/dmaengine_pcm.h"
-#include "sound/pcm_drm_eld.h"
-#include "sound/pcm_params.h"
-#include "sound/soc.h"
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_edid.h>
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/i2c.h>
+#include <linux/of_address.h>
+#include <linux/of_gpio.h>
+#include <linux/of_platform.h>
+#include <linux/pm_runtime.h>
+#include <linux/rational.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/pcm_drm_eld.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
 #include "vc4_drv.h"
 #include "vc4_regs.h"