Move platform constraints to bazel_common_rules.

This enables sharing of platform constraints between platform and kernel builds.

Bug: 304594734

Test: treehugger
Change-Id: I48091eeaf2e529c3f180ba056da3935911868b14
diff --git a/bp2build/bpf_conversion_test.go b/bp2build/bpf_conversion_test.go
index 1259f9e..26b0bf4 100644
--- a/bp2build/bpf_conversion_test.go
+++ b/bp2build/bpf_conversion_test.go
@@ -58,7 +58,7 @@
         "bpfTestSrcOne.c",
         "bpfTestSrcTwo.c",
     ]`,
-				"target_compatible_with": `["//build/bazel/platforms/os:android"]`,
+				"target_compatible_with": `["//build/bazel_common_rules/platforms/os:android"]`,
 			}),
 		},
 	})