x86/resctrl: Fix spelling in user-visible warning messages

Fix spelling mistake "Could't" -> "Couldn't" in user-visible warning
messages.

 [ bp: Massage commit message; s/cpu/CPU/g ]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200810075508.46490-1-colin.king@canonical.com

arch/x86/kernel/cpu/resctrl/core.c

@@ -562,7 +562,7 @@ static void domain_add_cpu(int cpu, struct rdt_resource *r)
 
 	d = rdt_find_domain(r, id, &add_pos);
 	if (IS_ERR(d)) {
-		pr_warn("Could't find cache id for cpu %d\n", cpu);
+		pr_warn("Couldn't find cache id for CPU %d\n", cpu);
 		return;
 	}
 
@@ -607,7 +607,7 @@ static void domain_remove_cpu(int cpu, struct rdt_resource *r)
 
 	d = rdt_find_domain(r, id, NULL);
 	if (IS_ERR_OR_NULL(d)) {
-		pr_warn("Could't find cache id for cpu %d\n", cpu);
+		pr_warn("Couldn't find cache id for CPU %d\n", cpu);
 		return;
 	}