PNP: isapnp: use str_plural() to simplify the code

Use the string choice helper function str_plural() to simplify the code.

Signed-off-by: Xichao Zhao <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Rafael J. Wysocki <[e-mail]>

drivers/pnp/isapnp/core.c

···
 #include <linux/init.h>
 #include <linux/isapnp.h>
 #include <linux/mutex.h>
+#include <linux/string_choices.h>
 #include <asm/io.h>
 
 #include "../base.h"
···
 	if (cards)
 		printk(KERN_INFO
 		       "isapnp: %i Plug & Play card%s detected total\n", cards,
-		       cards > 1 ? "s" : "");
+		       str_plural(cards));
 	else
 		printk(KERN_INFO "isapnp: No Plug & Play card found\n");