Include to define uid_t.

Change-Id: I02d36346fc3c6236bd64309798b434405f8dfef7
diff --git a/libcutils/Android.mk b/libcutils/Android.mk
index 6d525ba..2477d23 100644
--- a/libcutils/Android.mk
+++ b/libcutils/Android.mk
@@ -50,8 +50,7 @@
 	threads.c \
 	sched_policy.c \
 	iosched_policy.c \
-	str_parms.c \
-	multiuser.c
+	str_parms.c
 
 commonHostSources := \
         ashmem-host.c
@@ -125,7 +124,8 @@
         mq.c \
         partition_utils.c \
         qtaguid.c \
-        uevent.c
+        uevent.c \
+        multiuser.c
 
 ifeq ($(TARGET_ARCH),arm)
 LOCAL_SRC_FILES += arch-arm/memset32.S