headers: the uint*_t vs. __u* discrepancy in amdgpu_drm is fixed

This was already done in commit 3dc002df3e5 ("amdgpu: sync amdgpu_drm.h
with kernel 4.11-rc2"), now update the README accordingly.

Signed-off-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Acked-by: Emil Velikov <emil.velikov@collabora.com>
diff --git a/include/drm/README b/include/drm/README
index f3cdf5d..870b0b5 100644
--- a/include/drm/README
+++ b/include/drm/README
@@ -96,10 +96,6 @@
 Promote to fixed size ints, which match the current (32bit) ones.
 
 
-amdgpu_drm.h
- - Using the stdint.h uint*_t over the respective __u* ones
-Status: Trivial.
-
 drm_mode.h
  - Missing DPI encode/connector pair.
 Status: Trivial.