bazel: add designs/asap7/gcd RULES_JSON

strip down asap7/gcd to the simplest example.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>

Author: oharboe

flow/designs/asap7/gcd/BUILD

@@ -0,0 +1,21 @@
+load("@bazel-orfs//:openroad.bzl", "orfs_flow")
+
+orfs_flow(
+    name = "gcd",
+    arguments = {
+        # Faster builds
+        "SKIP_INCREMENTAL_REPAIR": "1",
+        "GPL_TIMING_DRIVEN": "0",
+        "SKIP_LAST_GASP": "1",
+        # Various
+        "DIE_AREA": "0 0 16.2 16.2",
+        "CORE_AREA": "1.08 1.08 15.12 15.12",
+        "PLACE_DENSITY": "0.35",
+    },
+    sources = {
+        "RULES_JSON": [":rules-base.json"],
+        "SDC_FILE": [":constraint.sdc"],
+    },
+    verilog_files = ["//designs/src/gcd:verilog"],
+    tags = ["manual"],
+)