make libserviceutility a shared lib

so that we have only one getpid_cached in mediaserver process

bug: 18919657

Change-Id: Iff3cd932c9110e874b3885f79705f49bf3e3f1fc
diff --git a/services/soundtrigger/Android.mk b/services/soundtrigger/Android.mk
index 572ae56..ecc49ae 100644
--- a/services/soundtrigger/Android.mk
+++ b/services/soundtrigger/Android.mk
@@ -32,9 +32,7 @@
     libcutils \
     libhardware \
     libsoundtrigger \
-    libmedia
-
-LOCAL_STATIC_LIBRARIES := \
+    libmedia \
     libserviceutility
 
 LOCAL_C_INCLUDES += \