src: use ARRAY_SIZE where possible

Generated with a variant of
https://coccinelle.gitlabpages.inria.fr/website/rules/array.cocci

Change-Id: I083704fd48faeb6c67bba3367fbcfe554a9f7c66
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50594
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/arch/x86/cpu.c

@@ -123,7 +123,7 @@ static const char *cpu_vendor_name(int vendor)
 {
 	const char *name;
 	name = "<invalid CPU vendor>";
-	if ((vendor < (ARRAY_SIZE(x86_vendor_name))) &&
+	if ((vendor < ARRAY_SIZE(x86_vendor_name)) &&
 		(x86_vendor_name[vendor] != 0))
 		name = x86_vendor_name[vendor];
 	return name;