powernow-k7: Fix CPU family number

Commit fa8031a ('cpufreq: Add support
for x86 cpuinfo auto loading v4') seems to have inadvertently changed
the matched CPU family number from 6 to 7.  Change it back.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Acked-by: Thomas Renninger <trenn@suse.de>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/cpufreq/powernow-k7.c

@@ -112,7 +112,7 @@ static int check_fsb(unsigned int fsbspeed)
 }
 
 static const struct x86_cpu_id powernow_k7_cpuids[] = {
-	{ X86_VENDOR_AMD, 7, },
+	{ X86_VENDOR_AMD, 6, },
 	{}
 };
 MODULE_DEVICE_TABLE(x86cpu, powernow_k7_cpuids);