drm/omap: Fix missing includes

With certain kernel config options many omapdrm files fail to compile
due to missing include of linux/gpio/consumer.h and linux/of.h.

This patch adds those includes.

Signed-off-by: Tomi Valkeinen <[e-mail]>
Reported-by: Dan Murphy <[e-mail]>
Reviewed-by: Laurent Pinchart <[e-mail]>

drivers/gpu/drm/omapdrm/displays/encoder-opa362.c

···
  */
 
 #include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>

drivers/gpu/drm/omapdrm/displays/panel-dpi.c

···
  */
 
 #include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>

drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c

···
 #include <linux/spi/spi.h>
 #include <linux/mutex.h>
 #include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 
 #include <video/omapdss.h>
 #include <video/omap-panel-data.h>

drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c

···
 
 #include <linux/delay.h>
 #include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_gpio.h>

drivers/gpu/drm/omapdrm/dss/hdmi4.c

···
 #include <linux/gpio.h>
 #include <linux/regulator/consumer.h>
 #include <linux/component.h>
+#include <linux/of.h>
 #include <video/omapdss.h>
 #include <sound/omap-hdmi-audio.h>
 

drivers/gpu/drm/omapdrm/dss/hdmi5.c

···
 #include <linux/gpio.h>
 #include <linux/regulator/consumer.h>
 #include <linux/component.h>
+#include <linux/of.h>
 #include <video/omapdss.h>
 #include <sound/omap-hdmi-audio.h>