CHERRY-PICK: daisy: enable probing using /proc/cmdline

This adds probe_cmdline() as a means of probing for Daisy/Snow.

BUG=none
TEST=Tested on Daisy/Snow

Change-Id: Idf43ca1b25f47bc6e4f208112452b90208c85a8a
Original-Change-Id: I1d4b20a473c6a6b75be506a754cd3ef830a5daea
diff --git a/platform/experimental/daisy/daisy.c b/platform/experimental/daisy/daisy.c
index e66a3c7..f99bc9c 100644
--- a/platform/experimental/daisy/daisy.c
+++ b/platform/experimental/daisy/daisy.c
@@ -74,6 +74,11 @@
 			status = 1;
 			goto daisy_probe_exit;
 		}
+
+		if (probe_cmdline(*id, 0) == 1) {
+			status = 1;
+			goto daisy_probe_exit;
+		}
 	}
 
 #if 0