Update to v6.4 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-6.4

Test: Bionic unit tests pass.
Change-Id: I991f8eaa2b272a464166addb13e6bdc63734444d
diff --git a/libc/kernel/uapi/asm-x86/asm/kvm.h b/libc/kernel/uapi/asm-x86/asm/kvm.h
index 5c8f5a6..105a8e1 100644
--- a/libc/kernel/uapi/asm-x86/asm/kvm.h
+++ b/libc/kernel/uapi/asm-x86/asm/kvm.h
@@ -420,4 +420,5 @@
 #define KVM_PMU_MASKED_ENTRY_UMASK_MASK_SHIFT (56)
 #define KVM_VCPU_TSC_CTRL 0
 #define KVM_VCPU_TSC_OFFSET 0
+#define KVM_EXIT_HYPERCALL_LONG_MODE BIT(0)
 #endif