loki: Standardize ifeq logic among makefiles

* Also resolve a typo.

Change-Id: Ic32740db8a9216751b5735ad472a7fcc48e6a738
diff --git a/Android.mk b/Android.mk
index b711f94..6986280 100644
--- a/Android.mk
+++ b/Android.mk
@@ -36,7 +36,7 @@
 endif
 
 # Loki
-ifeq ($(TAGET_NEEDS_LOKI),true)
+ifeq ($(strip $(TARGET_NEEDS_LOKI)),true)
 include $(SAM_ROOT)/loki_tool/Android.mk
 endif