drm/radeon: Don't include <drm/drm_pci.h>

Including <drm/drm_pci.h> is unnecessary in most cases. Replace
these instances.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203100406.9674-9-tzimmermann@suse.de

drivers/gpu/drm/radeon/kv_dpm.c

@@ -21,10 +21,9 @@
  *
  */
 
+#include <linux/pci.h>
 #include <linux/seq_file.h>
 
-#include <drm/drm_pci.h>
-
 #include "cikd.h"
 #include "kv_dpm.h"
 #include "r600_dpm.h"