Update Android Makefile to match Linux Makefile

Updates recently made to the linux makefile for c-timestamp
have been added to the android makefile

Change-Id: I26f211bd68e15a4a6d13a94df80d039128535132
Signed-off-by: Larry Sachs <larry.j.sachs@intel.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/27956Tested-by: IoTivity Jenkins <jenkins-daemon@iotivity.org>
Reviewed-by: George Nash <george.nash@intel.com>
Reviewed-by: Rick Bell <richard.s.bell@intel.com>
Reviewed-by: Kishen Maloor <kishen.maloor@intel.com>

port/android/Makefile

@@ -90,7 +90,9 @@ DTLSFLAGS=-I../../deps/mbedtls/include -D__OC_RANDOM
 
 CBOR=../../deps/tinycbor/src/cborencoder.c ../../deps/tinycbor/src/cborencoder_close_container_checked.c ../../deps/tinycbor/src/cborparser.c# ../../deps/tinycbor/src/cbortojson.c ../../deps/tinycbor/src/cborpretty.c ../../deps/tinycbor/src/cborparser_dup_string.c
 
-SRC_COMMON:=$(wildcard ../../util/*.c) ${CBOR}
+CTIMESTAMP=../../api/c-timestamp/timestamp_format.c ../../api/c-timestamp/timestamp_valid.c ../../api/c-timestamp/timestamp_parse.c
+
+SRC_COMMON:=$(wildcard ../../util/*.c) ${CBOR} ${CTIMESTAMP}
 SRC:=$(wildcard ../../messaging/coap/*.c ../../api/*.c ../../port/android/*.c)
 
 # From API level 24 on Android supports getifaddrs itself.
@@ -112,7 +114,7 @@ OBJ_COMMON=$(addprefix ${OBJDIR}/,$(notdir $(SRC_COMMON:.c=.o)))
 OBJ_CLIENT=$(addprefix ${OBJDIR}/client/,$(notdir $(SRC:.c=.o)))
 OBJ_SERVER=$(addprefix ${OBJDIR}/server/,$(filter-out oc_obt.o,$(notdir $(SRC:.c=.o))))
 OBJ_CLIENT_SERVER=$(addprefix ${OBJDIR}/client_server/,$(notdir $(SRC:.c=.o)))
-VPATH=../../messaging/coap/:../../util/:../../api/:../../deps/tinycbor/src/:../../deps/mbedtls/library:
+VPATH=../../messaging/coap/:../../util/:../../api/:../../deps/tinycbor/src/:../../deps/mbedtls/library:../../api/c-timestamp:
 LIBS?= -lm
 
 SAMPLES := server client temp_sensor simpleserver simpleclient client_collections_linux \