Revert "Update to v6.11 kernel headers."

Revert submission 3277111-kernel_611

Reason for revert: Droidmonitor created revert due to b/369448759.

Reverted changes: /q/submissionid:3277111-kernel_611

Change-Id: I3cabcc2c55904459c69dbfa81e6e65863a7e57cc
diff --git a/libc/include/bits/glibc-syscalls.h b/libc/include/bits/glibc-syscalls.h
index 18332db..7b171e8 100644
--- a/libc/include/bits/glibc-syscalls.h
+++ b/libc/include/bits/glibc-syscalls.h
@@ -939,6 +939,12 @@
 #if defined(__NR_restart_syscall)
   #define SYS_restart_syscall __NR_restart_syscall
 #endif
+#if defined(__NR_riscv_flush_icache)
+  #define SYS_riscv_flush_icache __NR_riscv_flush_icache
+#endif
+#if defined(__NR_riscv_hwprobe)
+  #define SYS_riscv_hwprobe __NR_riscv_hwprobe
+#endif
 #if defined(__NR_rmdir)
   #define SYS_rmdir __NR_rmdir
 #endif
@@ -1365,9 +1371,6 @@
 #if defined(__NR_unshare)
   #define SYS_unshare __NR_unshare
 #endif
-#if defined(__NR_uretprobe)
-  #define SYS_uretprobe __NR_uretprobe
-#endif
 #if defined(__NR_uselib)
   #define SYS_uselib __NR_uselib
 #endif