[recovery]: Add support for OTA upgrade on mmc devices.

Change-Id: I8f230dfa5be4e9f142765797d949e10434e1fdeb

Author: Shashank Mittal

Android.mk

@@ -149,7 +149,7 @@ else
 endif
 LOCAL_STATIC_LIBRARIES += libbusybox libclearsilverregex libmkyaffs2image libunyaffs liberase_image libdump_image libflash_image libmtdutils
 LOCAL_STATIC_LIBRARIES += libamend
-LOCAL_STATIC_LIBRARIES += libminzip libunz libmtdutils libmincrypt
+LOCAL_STATIC_LIBRARIES += libminzip libunz libmtdutils libmmcutils libmincrypt
 LOCAL_STATIC_LIBRARIES += libminui libpixelflinger_static libpng libcutils
 LOCAL_STATIC_LIBRARIES += libstdc++ libc
 
@@ -216,6 +216,7 @@ include $(commands_recovery_local_path)/bmlutils/Android.mk
 include $(commands_recovery_local_path)/minui/Android.mk
 include $(commands_recovery_local_path)/minzip/Android.mk
 include $(commands_recovery_local_path)/mtdutils/Android.mk
+include $(commands_recovery_local_path)/mmcutils/Android.mk
 include $(commands_recovery_local_path)/tools/Android.mk
 include $(commands_recovery_local_path)/edify/Android.mk
 include $(commands_recovery_local_path)/updater/Android.mk

mmcutils/Android.mk

@@ -0,0 +1,15 @@
+ifneq ($(TARGET_SIMULATOR),true)
+ifeq ($(TARGET_ARCH),arm)
+
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := \
+	mmcutils.c
+
+LOCAL_MODULE := libmmcutils
+
+include $(BUILD_STATIC_LIBRARY)
+
+endif	# TARGET_ARCH == arm
+endif	# !TARGET_SIMULATOR