[CPUFREQ] Correct revision mask for powernow-k8

Mark Langsdorf points out that the correct define for this
revision bump is 0x80000.  Also to save us having to keep
renaming the #define, give it a more meaningful name.
Signed-off-by: Dave Jones <davej@redhat.com>

arch/i386/kernel/cpu/cpufreq/powernow-k8.c

@@ -521,7 +521,7 @@ static int check_supported_cpu(unsigned int cpu)
 
 	if ((eax & CPUID_XFAM) == CPUID_XFAM_K8) {
 		if (((eax & CPUID_USE_XFAM_XMOD) != CPUID_USE_XFAM_XMOD) ||
-		    ((eax & CPUID_XMOD) > CPUID_XMOD_REV_H)) {
+		    ((eax & CPUID_XMOD) > CPUID_XMOD_REV_MASK)) {
 			printk(KERN_INFO PFX "Processor cpuid %x not supported\n", eax);
 			goto out;
 		}

arch/i386/kernel/cpu/cpufreq/powernow-k8.h

@@ -46,7 +46,7 @@ struct powernow_k8_data {
 #define CPUID_XFAM			0x0ff00000	/* extended family */
 #define CPUID_XFAM_K8			0
 #define CPUID_XMOD			0x000f0000	/* extended model */
-#define CPUID_XMOD_REV_H		0x00070000
+#define CPUID_XMOD_REV_MASK		0x00080000
 #define CPUID_XFAM_10H			0x00100000	/* family 0x10 */
 #define CPUID_USE_XFAM_XMOD		0x00000f00
 #define CPUID_GET_MAX_CAPABILITIES	0x80000000