cpu: Fix definition of flag smap

A mild case of dyslexia caused that commit
012f9b19 specifies wrong mask for the
smap cpu feature flag. This patch fixes that mistake.

src/cpu/cpu_map.xml

@@ -270,7 +270,7 @@
       <cpuid function='0x00000007' ebx='0x00000080'/>
     </feature>
     <feature name='smap'>
-      <cpuid function='0x00000007' ebx='0x00080000'/>
+      <cpuid function='0x00000007' ebx='0x00100000'/>
     </feature>
 
     <!-- models -->