Add EMR, GNR, and SRF CPUModel definitions

Change-Id: I41a92cd2e07df4bf98db1c35d3852dbd2c6bfec7
Signed-off-by: Jonathan Doman <jonathan.doman@intel.com>
diff --git a/peci.h b/peci.h
index fb46010..b3404a7 100644
--- a/peci.h
+++ b/peci.h
@@ -35,6 +35,9 @@
     icx = 0x000606A0,
     icxd = 0x000606C0,
     spr = 0x000806F0,
+    emr = 0x000C06F0,
+    gnr = 0x000A06D0,
+    srf = 0x000A06F0,
 } CPUModel;
 
 // PECI Status Codes