TDE: fix build of the address book driver, 2nd

The tdeab1 also needs boost headers. Not sure why my compile
survived the first time (ccache?), after removin the boost
headers from the makefile.

Change-Id: I2b1f88f17eef549cb3effd2267d15ba97627f2b1

connectivity/Library_tdeab1.mk

@@ -11,6 +11,7 @@
 $(eval $(call gb_Library_Library,tdeab1))
 
 $(eval $(call gb_Library_use_externals,tdeab1,\
+	boost_headers \
 	tde \
 ))