x86: move MWAIT idle check to generic CPU initialization on 32-bit

Previously it was only run for Intel CPUs, but AMD Fam10h implements MWAIT too.

This matches 64bit behaviour.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/kernel/cpu/common.c

@@ -499,6 +499,8 @@ void __cpuinit identify_cpu(struct cpuinfo_x86 *c)
 
 	/* Init Machine Check Exception if available. */
 	mcheck_init(c);
+
+	select_idle_routine(c);
 }
 
 void __init identify_boot_cpu(void)

arch/x86/kernel/cpu/intel.c

@@ -137,7 +137,6 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c)
 	}
 #endif
 
-	select_idle_routine(c);
 	l2 = init_intel_cacheinfo(c);
 	if (c->cpuid_level > 9 ) {
 		unsigned eax = cpuid_eax(10);