cpu/SMT: Fix cpu_smt_possible() comment

Commit e1572f1 ("cpu/SMT: create and export cpu_smt_possible()")
introduces cpu_smt_possible() to represent if SMT is theoretically
possible. It returns true when SMT is supported and not forcefully
disabled ('nosmt=force'). But the comment of it says "Returns true if
SMT is not supported of forcefully (irreversibly) disabled", which is
wrong. Fix that comment accordingly.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/20230728155313.44170-1-rui.zhang@intel.com

kernel/cpu.c

@@ -676,7 +676,7 @@ static inline bool cpu_smt_allowed(unsigned int cpu)
 	return !cpumask_test_cpu(cpu, &cpus_booted_once_mask);
 }
 
-/* Returns true if SMT is not supported of forcefully (irreversibly) disabled */
+/* Returns true if SMT is supported and not forcefully (irreversibly) disabled */
 bool cpu_smt_possible(void)
 {
 	return cpu_smt_control != CPU_SMT_FORCE_DISABLED &&