drm/pl111: drop use of drmP.h

Drop use of the deprecated drmP.h header.
Sort includes in blocks while touching the files.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190716064220.18157-4-sam@ravnborg.org

drivers/gpu/drm/pl111/pl111_debugfs.c

@@ -8,8 +8,10 @@
 
 #include <linux/amba/clcd-regs.h>
 #include <linux/seq_file.h>
+
 #include <drm/drm_debugfs.h>
-#include <drm/drmP.h>
+#include <drm/drm_file.h>
+
 #include "pl111_drm.h"
 
 #define REGDEF(reg) { reg, #reg }