LoongArch: Use str_yes_no() helper function for /proc/cpuinfo

Remove hard-coded strings by using the str_yes_no() helper function.

Similar to commit c4a0a4a ("MIPS: kernel: proc: Use str_yes_no()
helper function").

Co-developed-by: Wentao Guan <[email protected]>
Signed-off-by: Wentao Guan <[email protected]>
Signed-off-by: Yuli Wang <[email protected]>
Signed-off-by: Huacai Chen <[email protected]>

Author: Avenger-285714

arch/loongarch/kernel/proc.c

@@ -91,10 +91,9 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 	if (cpu_has_lbt_mips)	seq_printf(m, " lbt_mips");
 	seq_printf(m, "\n");
 
-	seq_printf(m, "Hardware Watchpoint\t: %s",
-		      cpu_has_watch ? "yes, " : "no\n");
+	seq_printf(m, "Hardware Watchpoint\t: %s", str_yes_no(cpu_has_watch));
 	if (cpu_has_watch) {
-		seq_printf(m, "iwatch count: %d, dwatch count: %d\n",
+		seq_printf(m, ", iwatch count: %d, dwatch count: %d",
 		      cpu_data[n].watch_ireg_count, cpu_data[n].watch_dreg_count);
 	}
 
@@ -104,7 +103,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 	raw_notifier_call_chain(&proc_cpuinfo_chain, 0,
 				&proc_cpuinfo_notifier_args);
 
-	seq_printf(m, "\n");
+	seq_printf(m, "\n\n");
 
 	return 0;
 }