Use relocation-packer style relocation packing between 23 and 28.

Bug: http://b/147452927
Test: treehugger
Change-Id: I8197dcb7884993d75775eaea667981d7822d6d1d
diff --git a/cc/linker.go b/cc/linker.go
index c2b4a3a..e74d9ad 100644
--- a/cc/linker.go
+++ b/cc/linker.go
@@ -362,6 +362,8 @@
 				flags.Global.LdFlags = append(flags.Global.LdFlags,
 					"-Wl,--pack-dyn-relocs=android+relr",
 					"-Wl,--use-android-relr-tags")
+			} else if CheckSdkVersionAtLeast(ctx, 23) {
+				flags.Global.LdFlags = append(flags.Global.LdFlags, "-Wl,--pack-dyn-relocs=android")
 			}
 		}
 	} else {