ARM: EXYNOS: call scu_enable() only in case of cortex-A9 processor

This patch reads the cpuid part number and if it matches with
cortex-A9, calls scu_enable()

Signed-off-by: Leela Krishna Amudala <l.krishna@samsung.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/mach-exynos/platsmp.c

@@ -200,7 +200,7 @@ static void __init exynos_smp_prepare_cpus(unsigned int max_cpus)
 {
 	int i;
 
-	if (!(soc_is_exynos5250() || soc_is_exynos5440()))
+	if (read_cpuid_part_number() == ARM_CPU_PART_CORTEX_A9)
 		scu_enable(scu_base_addr());
 
 	/*