x86, cpu: Fix detection of Celeron Covington stepping A1 and B0

Steppings A1 and B0 of Celeron Covington are currently misdetected as
Pentium II (Dixon). Fix it by removing the stepping check.

[ hpa: this fixes this specific bug... the CPUID documentation
  specifies that the L2 cache size can disambiguate additional CPUs;
  this patch does not fix that. ]
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Link: http://lkml.kernel.org/r/201105162138.15416.linux@rainbow-software.orgSigned-off-by: H. Peter Anvin <hpa@linux.intel.com>

arch/x86/kernel/cpu/intel.c

@@ -400,12 +400,10 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c)
 
 		switch (c->x86_model) {
 		case 5:
-			if (c->x86_mask == 0) {
 			if (l2 == 0)
 				p = "Celeron (Covington)";
 			else if (l2 == 256)
 				p = "Mobile Pentium II (Dixon)";
-			}
 			break;
 
 		case 6: