Match dory/platina/guppy device instead of product.

This seems to match what another location does:
android/hardware/invensense/Android.mk

And it will let the platina_google product variety also match.

Change-Id: I5157176b0609541ad85a2a2b1cf5a57b790e23f6
diff --git a/Android.mk b/Android.mk
index ee290a5..e00ef74 100644
--- a/Android.mk
+++ b/Android.mk
@@ -3,8 +3,8 @@
   # hammerhead expects 65xx sensors.
   include $(call all-named-subdir-makefiles,65xx)
 else
-ifneq ($(filter guppy dory platina, $(TARGET_DEVICE)),)
-# dory, guppy, and platina expect 6515 sensors.
+ifneq ($(filter guppy dory, $(TARGET_DEVICE)),)
+# dory and guppy expect 6515 sensors.
 include $(call all-named-subdir-makefiles,6515)
 else
 # manta expects 60xx sensors.