x86/cpu: Add Atom Tremont (Jacobsville)

Add the Atom Tremont model number to the Intel family list.

[ Tony: Also update comment at head of file to say "_X" suffix is
  also used for microserver parts. ]

Signed-off-by: Kan Liang <[email protected]>
Signed-off-by: Qiuxu Zhuo <[email protected]>
Signed-off-by: Tony Luck <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Cc: Andy Shevchenko <[email protected]>
Cc: Aristeu Rozanski <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: linux-edac <[email protected]>
Cc: Mauro Carvalho Chehab <[email protected]>
Cc: Megha Dey <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Qiuxu Zhuo <[email protected]>
Cc: Rajneesh Bhardwaj <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: x86-ml <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]

arch/x86/include/asm/intel-family.h

@@ -6,7 +6,7 @@
  * "Big Core" Processors (Branded as Core, Xeon, etc...)
  *
  * The "_X" parts are generally the EP and EX Xeons, or the
- * "Extreme" ones, like Broadwell-E.
+ * "Extreme" ones, like Broadwell-E, or Atom microserver.
  *
  * While adding a new CPUID for a new microarchitecture, add a new
  * group to keep logically sorted out in chronological order. Within
@@ -71,6 +71,7 @@
 #define INTEL_FAM6_ATOM_GOLDMONT	0x5C /* Apollo Lake */
 #define INTEL_FAM6_ATOM_GOLDMONT_X	0x5F /* Denverton */
 #define INTEL_FAM6_ATOM_GOLDMONT_PLUS	0x7A /* Gemini Lake */
+#define INTEL_FAM6_ATOM_TREMONT_X	0x86 /* Jacobsville */
 
 /* Xeon Phi */