x86/cpufeature: Replace cpu_has_avx2 with boot_cpu_has() usage

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-crypto@vger.kernel.org
Link: http://lkml.kernel.org/r/1459801503-15600-2-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/crypto/serpent_avx2_glue.c

@@ -538,7 +538,7 @@ static int __init init(void)
 {
 	const char *feature_name;
 
-	if (!cpu_has_avx2 || !boot_cpu_has(X86_FEATURE_OSXSAVE)) {
+	if (!boot_cpu_has(X86_FEATURE_AVX2) || !boot_cpu_has(X86_FEATURE_OSXSAVE)) {
 		pr_info("AVX2 instructions are not detected.\n");
 		return -ENODEV;
 	}