msm_shared: Enable shutdown detect compilation for MSM8610

Add the shutdown detection function needed for MSM8610.
It is used to support the feature of long press power key.

Change-Id: Ib4ce1a5ef149354d253b02f5366109de4f385c96
diff --git a/platform/msm_shared/rules.mk b/platform/msm_shared/rules.mk
index 78edf48..1b10150 100755
--- a/platform/msm_shared/rules.mk
+++ b/platform/msm_shared/rules.mk
@@ -197,7 +197,8 @@
             $(LOCAL_DIR)/crypto_hash.o \
             $(LOCAL_DIR)/crypto5_eng.o \
             $(LOCAL_DIR)/crypto5_wrapper.o \
-            $(LOCAL_DIR)/dload_util.o
+            $(LOCAL_DIR)/dload_util.o \
+            $(LOCAL_DIR)/shutdown_detect.o
 endif
 
 ifeq ($(PLATFORM),apq8084)