Update const names to be Go style.

PiperOrigin-RevId: 276165962

pkg/sentry/syscalls/linux/linux64.go

@@ -16,7 +16,12 @@
 package linux
 
 const (
-	_LINUX_SYSNAME = "Linux"
-	_LINUX_RELEASE = "4.4.0"
-	_LINUX_VERSION = "#1 SMP Sun Jan 10 15:06:54 PST 2016"
+	// LinuxSysname is the OS name advertised by gVisor.
+	LinuxSysname = "Linux"
+
+	// LinuxRelease is the Linux release version number advertised by gVisor.
+	LinuxRelease = "4.4.0"
+
+	// LinuxVersion is the version info advertised by gVisor.
+	LinuxVersion = "#1 SMP Sun Jan 10 15:06:54 PST 2016"
 )

pkg/sentry/syscalls/linux/linux64_amd64.go

@@ -34,9 +34,9 @@ var AMD64 = &kernel.SyscallTable{
 		// guides the interface provided by this syscall table. The build
 		// version is that for a clean build with default kernel config, at 5
 		// minutes after v4.4 was tagged.
-		Sysname: _LINUX_SYSNAME,
-		Release: _LINUX_RELEASE,
-		Version: _LINUX_VERSION,
+		Sysname: LinuxSysname,
+		Release: LinuxRelease,
+		Version: LinuxVersion,
 	},
 	AuditNumber: linux.AUDIT_ARCH_X86_64,
 	Table: map[uintptr]kernel.Syscall{

pkg/sentry/syscalls/linux/linux64_arm64.go

@@ -30,9 +30,9 @@ var ARM64 = &kernel.SyscallTable{
 	OS:   abi.Linux,
 	Arch: arch.ARM64,
 	Version: kernel.Version{
-		Sysname: _LINUX_SYSNAME,
-		Release: _LINUX_RELEASE,
-		Version: _LINUX_VERSION,
+		Sysname: LinuxSysname,
+		Release: LinuxRelease,
+		Version: LinuxVersion,
 	},
 	AuditNumber: linux.AUDIT_ARCH_AARCH64,
 	Table: map[uintptr]kernel.Syscall{