Add openssl to TINY_ANDROID build

adb depends on it

Change-Id: I79f23315142b45bc7f9a2685fa2b9865b22396ad
diff --git a/core/main.mk b/core/main.mk
index a71359d..87488f4 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -468,6 +468,7 @@
 	build/tools/acp \
 	external/gcc-demangle \
 	external/mksh \
+	external/openssl \
 	external/yaffs2 \
 	external/zlib
 else	# !BUILD_TINY_ANDROID