Update to v6.0 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-6.0

Test: Boots on coral.
Test: Bionic unit tests pass.
Change-Id: I282de83f23b432bef58214108a93700bdadddf0f
diff --git a/libc/kernel/uapi/drm/amdgpu_drm.h b/libc/kernel/uapi/drm/amdgpu_drm.h
index 2d3afda..f03a086 100644
--- a/libc/kernel/uapi/drm/amdgpu_drm.h
+++ b/libc/kernel/uapi/drm/amdgpu_drm.h
@@ -650,7 +650,7 @@
   __u32 ib_start_alignment;
   __u32 ib_size_alignment;
   __u32 available_rings;
-  __u32 _pad;
+  __u32 ip_discovery_version;
 };
 struct drm_amdgpu_info_num_handles {
   __u32 uvd_max_handles;