Update to v5.16 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.16

Test: Builds and bionic unit tests pass.
Change-Id: I2522c4f2a0efb9f8a193e1f2d65868e478217502
diff --git a/libc/kernel/uapi/asm-x86/asm/kvm_para.h b/libc/kernel/uapi/asm-x86/asm/kvm_para.h
index 4407a85..dd72af0 100644
--- a/libc/kernel/uapi/asm-x86/asm/kvm_para.h
+++ b/libc/kernel/uapi/asm-x86/asm/kvm_para.h
@@ -20,6 +20,7 @@
 #define _UAPI_ASM_X86_KVM_PARA_H
 #include <linux/types.h>
 #define KVM_CPUID_SIGNATURE 0x40000000
+#define KVM_SIGNATURE "KVMKVMKVM\0\0\0"
 #define KVM_CPUID_FEATURES 0x40000001
 #define KVM_FEATURE_CLOCKSOURCE 0
 #define KVM_FEATURE_NOP_IO_DELAY 1