Update to v6.8 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-6.8

Test: Builds and bionic unit tests pass on raven.
Test: Able to log in to an Android GO 32 bit device.
Change-Id: I0022cdb20c19726f526acaab2866f1e25794b77e
diff --git a/libc/kernel/uapi/asm-arm/asm/unistd-eabi.h b/libc/kernel/uapi/asm-arm/asm/unistd-eabi.h
index 482b9cb..1032131 100644
--- a/libc/kernel/uapi/asm-arm/asm/unistd-eabi.h
+++ b/libc/kernel/uapi/asm-arm/asm/unistd-eabi.h
@@ -415,4 +415,9 @@
 #define __NR_futex_wake (__NR_SYSCALL_BASE + 454)
 #define __NR_futex_wait (__NR_SYSCALL_BASE + 455)
 #define __NR_futex_requeue (__NR_SYSCALL_BASE + 456)
+#define __NR_statmount (__NR_SYSCALL_BASE + 457)
+#define __NR_listmount (__NR_SYSCALL_BASE + 458)
+#define __NR_lsm_get_self_attr (__NR_SYSCALL_BASE + 459)
+#define __NR_lsm_set_self_attr (__NR_SYSCALL_BASE + 460)
+#define __NR_lsm_list_modules (__NR_SYSCALL_BASE + 461)
 #endif