x86/tsx: Make tsx_ctrl_state static

Move all definitions related to tsx_ctrl_state to tsx.c. They are
never referenced outside this file.

No functional change.

Signed-off-by: Petr Tesarik <ptesarik@suse.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
Link: https://lore.kernel.org/all/cover.1758906115.git.ptesarik@suse.com

Author: ptesarik

arch/x86/kernel/cpu/cpu.h

@@ -42,15 +42,6 @@ extern const struct cpu_dev *const __x86_cpu_dev_start[],
 			    *const __x86_cpu_dev_end[];
 
 #ifdef CONFIG_CPU_SUP_INTEL
-enum tsx_ctrl_states {
-	TSX_CTRL_ENABLE,
-	TSX_CTRL_DISABLE,
-	TSX_CTRL_RTM_ALWAYS_ABORT,
-	TSX_CTRL_NOT_SUPPORTED,
-};
-
-extern __ro_after_init enum tsx_ctrl_states tsx_ctrl_state;
-
 extern void __init tsx_init(void);
 void tsx_ap_init(void);
 void intel_unlock_cpuid_leafs(struct cpuinfo_x86 *c);

arch/x86/kernel/cpu/tsx.c

@@ -19,7 +19,14 @@
 #undef pr_fmt
 #define pr_fmt(fmt) "tsx: " fmt
 
-enum tsx_ctrl_states tsx_ctrl_state __ro_after_init = TSX_CTRL_NOT_SUPPORTED;
+enum tsx_ctrl_states {
+	TSX_CTRL_ENABLE,
+	TSX_CTRL_DISABLE,
+	TSX_CTRL_RTM_ALWAYS_ABORT,
+	TSX_CTRL_NOT_SUPPORTED,
+};
+
+static enum tsx_ctrl_states tsx_ctrl_state __ro_after_init = TSX_CTRL_NOT_SUPPORTED;
 
 static void tsx_disable(void)
 {