Update to v6.9 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-6.9

Test: Builds and bionic unit tests pass on raven.
Test: Able to log in to an Android GO 32 bit device.
Change-Id: If53a38bbb65c3c653ce790fe5c6e51597901a14e
diff --git a/libc/kernel/uapi/linux/io_uring.h b/libc/kernel/uapi/linux/io_uring.h
index 27675d5..10936f2 100644
--- a/libc/kernel/uapi/linux/io_uring.h
+++ b/libc/kernel/uapi/linux/io_uring.h
@@ -174,6 +174,7 @@
   IORING_OP_FUTEX_WAKE,
   IORING_OP_FUTEX_WAITV,
   IORING_OP_FIXED_FD_INSTALL,
+  IORING_OP_FTRUNCATE,
   IORING_OP_LAST,
 };
 #define IORING_URING_CMD_FIXED (1U << 0)
@@ -316,6 +317,8 @@
   IORING_REGISTER_SYNC_CANCEL = 24,
   IORING_REGISTER_FILE_ALLOC_RANGE = 25,
   IORING_REGISTER_PBUF_STATUS = 26,
+  IORING_REGISTER_NAPI = 27,
+  IORING_UNREGISTER_NAPI = 28,
   IORING_REGISTER_LAST,
   IORING_REGISTER_USE_REGISTERED_RING = 1U << 31
 };
@@ -406,6 +409,12 @@
   __u32 head;
   __u32 resv[8];
 };
+struct io_uring_napi {
+  __u32 busy_poll_to;
+  __u8 prefer_busy_poll;
+  __u8 pad[3];
+  __u64 resv;
+};
 enum {
   IORING_RESTRICTION_REGISTER_OP = 0,
   IORING_RESTRICTION_SQE_OP = 1,