For building Invensense HAL for Android L Arm 64bit
===================================================
	$ cd $android_L_root
	$ . build/envsetup.sh
	$ lunch aosp_flounder-userdebug (or any arm64 target)

	$ -> copy Invensense HAL libsensor folder to $android_L_root/hardware/invensense/65xx/
	$ -> modifiy the makefile $android_L_root/hardware/invensense/Android.mk to include htc/nvidia flounder target

	$ make libinvensense_hal
	$ make sensors.flounder

	$ adb push $OUT/system/lib/libmllite.so /system/lib/
	$ adb push $OUT/system/lib/libinvensense_hal.so /system/lib/
	$ adb push $OUT/system/lib/hw/sensors.flounder.so /system/lib/hw/