ARM: use read_cpuid_id() instead of read_cpuid(CPUID_ID)

Both calls are identical currently. This patch prepares to deprecate
read_cpuid on machines without cp15.

Also move an unconditional usage of read_cpuid_cachetype to a more local
scope as read_cpuid_cachetype uses read_cpuid, too.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Message-Id: 1359646587-1788-1-git-send-email-u.kleine-koenig@pengutronix.de

arch/arm/kernel/setup.c

@@ -291,10 +291,10 @@ static int cpu_has_aliasing_icache(unsigned int arch)
 
 static void __init cacheid_init(void)
 {
-	unsigned int cachetype = read_cpuid_cachetype();
 	unsigned int arch = cpu_architecture();
 
 	if (arch >= CPU_ARCH_ARMv6) {
+		unsigned int cachetype = read_cpuid_cachetype();
 		if ((cachetype & (7 << 29)) == 4 << 29) {
 			/* ARMv7 register format */
 			arch = CPU_ARCH_ARMv7;