L2_ASSOCIATIVE incorrect for x86

[ShijieC]

line 852,913 at cpuid_x86.c
L2.associative = BITMASK(ecx, 12, 0x0f);

this value is only a index, should use the following table to get the value

                                00H Disabled
                                01H Direct mapped
                                02H 2-way associative
                                04H 4-way associative
                                06H 8-way associative
                                08H 16-way associative
                                0FH Fully associative

ref:
http://www.flounder.com/cpuid_explorer2.htm#CPUID(0x800000006)

[ShijieC]

CPUID(2)
CPUID(0x800000006)
CPUID(4, n): Cache information
These cpuid instructs can all be used to read the cache information.

cpuid_x86.c first call CPUID(2)
at that time, L2.associative get the accuracy value
then call CPUID(0x800000006)
L2.associative become incorrect

can add a if statement

if (L2.size > 0)
skip call CPUID(0x800000006)

[xianyi]

Thank you. I have fixed this bug on develop branch.