util/spd_tools/lp4x: Add new memory part to to global memory definition

This new definition is for MT53E512M32D1NP-046 WT:B used on Cret.

BUG=b:183057749
TEST=Generate SPDs

Signed-off-by: Dtrain Hsu <dtrain_hsu@compal.corp-partner.google.com>
Change-Id: Ica5df61d96d2c4cbe62a560a53bd3bd08eb121f9
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54746
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

util/spd_tools/lp4x/global_lp4x_mem_parts.json.txt

@@ -279,6 +279,18 @@
                 "ranksPerChannel": 2,
                 "speedMbps": 4267
             }
+        },
+        {
+            "name": "MT53E512M32D1NP-046 WT:B",
+            "attribs": {
+                "densityPerChannelGb": 8,
+                "banks": 8,
+                "channelsPerDie": 2,
+                "diesPerPackage": 1,
+                "bitWidthPerChannel": 16,
+                "ranksPerChannel": 1,
+                "speedMbps": 4267
+            }
         }
     ]
 }