drm/amdgpu: drop drmP.h from nv.c

And fix up the fallout.
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/nv.c

@@ -23,7 +23,8 @@
 #include <linux/firmware.h>
 #include <linux/slab.h>
 #include <linux/module.h>
-#include <drm/drmP.h>
+#include <linux/pci.h>
+
 #include "amdgpu.h"
 #include "amdgpu_atombios.h"
 #include "amdgpu_ih.h"