x86: fix typo in filter_cpuid_features()

Impact: fix wrong disabling of cpu features

an amd system got this strange output:

 CPU: CPU feature monitor disabled due to lack of CPUID level 0x5

but in /proc/cpuinfo I have:

 cpuid level	: 5

on intel system:

 CPU: CPU feature monitor disabled due to lack of CPUID level 0x5
 CPU: CPU feature dca disabled due to lack of CPUID level 0x9

but in /proc/cpuinfo i have:

 cpuid level     : 11

Tt turns out there is a typo, and we should use level member in df.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/cpu/common.c

@@ -241,9 +241,9 @@ static void __cpuinit filter_cpuid_features(struct cpuinfo_x86 *c, bool warn)
 		 * signs here...
 		 */
 		if (cpu_has(c, df->feature) &&
-		    ((s32)df->feature < 0 ?
-		     (u32)df->feature > (u32)c->extended_cpuid_level :
-		     (s32)df->feature > (s32)c->cpuid_level)) {
+		    ((s32)df->level < 0 ?
+		     (u32)df->level > (u32)c->extended_cpuid_level :
+		     (s32)df->level > (s32)c->cpuid_level)) {
 			clear_cpu_cap(c, df->feature);
 			if (warn)
 				printk(KERN_WARNING