Revert "Revert "Patches for PGU support""

Since all problems with hdmi support are solved, we
can again apply all patches for pgu support.

This reverts commit 1a60893.

Author: Lada Trimasova

linux/0001-drm-fixes-when-i2c-encoder-slave-mode_fixup-is-null.patch

@@ -0,0 +1,33 @@
+From c2fe3de556a40fb59fb157fc0ece18903030cfd6 Mon Sep 17 00:00:00 2001
+From: Carlos Palminha <[email protected]>
+Date: Wed, 10 Feb 2016 12:08:38 +0000
+Subject: [PATCH 1/9] drm: fixes when i2c encoder slave mode_fixup is null.
+
+Avoid i2c slave encoder drivers to copy/paste code to implement functions that will
+only return true.
+
+Signed-off-by: Carlos Palminha <[email protected]>
+[danvet: whitespace requested by Jani.]
+Signed-off-by: Daniel Vetter <[email protected]>
+Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
+---
+ drivers/gpu/drm/drm_encoder_slave.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/drivers/gpu/drm/drm_encoder_slave.c b/drivers/gpu/drm/drm_encoder_slave.c
+index d18b88b..d33a769 100644
+--- a/drivers/gpu/drm/drm_encoder_slave.c
++++ b/drivers/gpu/drm/drm_encoder_slave.c
+@@ -140,6 +140,9 @@ bool drm_i2c_encoder_mode_fixup(struct drm_encoder *encoder,
+ 		const struct drm_display_mode *mode,
+ 		struct drm_display_mode *adjusted_mode)
+ {
++	if (!get_slave_funcs(encoder)->mode_fixup)
++		return true;
++
+ 	return get_slave_funcs(encoder)->mode_fixup(encoder, mode, adjusted_mode);
+ }
+ EXPORT_SYMBOL(drm_i2c_encoder_mode_fixup);
+-- 
+2.5.5
+