Update to v5.0 kernel headers.

Test: Builds and boots on taimen.
Change-Id: I13843bf1ab30ea89a50852adc88f2cba8401bded
diff --git a/libc/kernel/uapi/asm-generic/shmparam.h b/libc/kernel/uapi/asm-generic/shmparam.h
deleted file mode 100644
index d3f1453..0000000
--- a/libc/kernel/uapi/asm-generic/shmparam.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/****************************************************************************
- ****************************************************************************
- ***
- ***   This header was automatically generated from a Linux kernel header
- ***   of the same name, to make information necessary for userspace to
- ***   call into the kernel available to libc.  It contains only constants,
- ***   structures, and macros generated from the original header, and thus,
- ***   contains no copyrightable information.
- ***
- ***   To edit the content of this header, modify the corresponding
- ***   source file (e.g. under external/kernel-headers/original/) then
- ***   run bionic/libc/kernel/tools/update_all.py
- ***
- ***   Any manual change here will be lost the next time this script will
- ***   be run. You've been warned!
- ***
- ****************************************************************************
- ****************************************************************************/
-#ifndef __ASM_GENERIC_SHMPARAM_H
-#define __ASM_GENERIC_SHMPARAM_H
-#define SHMLBA PAGE_SIZE
-#endif
diff --git a/libc/kernel/uapi/asm-generic/unistd.h b/libc/kernel/uapi/asm-generic/unistd.h
index fddf1d0..4113881 100644
--- a/libc/kernel/uapi/asm-generic/unistd.h
+++ b/libc/kernel/uapi/asm-generic/unistd.h
@@ -321,8 +321,9 @@
 #define __NR_statx 291
 #define __NR_io_pgetevents 292
 #define __NR_rseq 293
+#define __NR_kexec_file_load 294
 #undef __NR_syscalls
-#define __NR_syscalls 294
+#define __NR_syscalls 295
 #if __BITS_PER_LONG == 64 && !defined(__SYSCALL_COMPAT)
 #define __NR_fcntl __NR3264_fcntl
 #define __NR_statfs __NR3264_statfs