pcsc: Allow to disable the PCSC dependency

* PCSC is enabled by default
* --enable-pcsc is enabling it
* --disable-pcscis disabling it
* Fix the makefile of the utilities to not build pcsc and
use the right header files/libraries.
diff --git a/utils/Makefile.am b/utils/Makefile.am
index 7d784bd..41f91f9 100644
--- a/utils/Makefile.am
+++ b/utils/Makefile.am
@@ -3,7 +3,6 @@
 AM_CFLAGS = -Wall
 
 bin_PROGRAMS = osmo-arfcn osmo-auc-gen
-noinst_PROGRAMS = osmo-sim-test
 
 osmo_arfcn_SOURCES = osmo-arfcn.c
 osmo_arfcn_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/src/gsm/libosmogsm.la
@@ -11,7 +10,10 @@
 osmo_auc_gen_SOURCES = osmo-auc-gen.c
 osmo_auc_gen_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/src/gsm/libosmogsm.la
 
+if ENABLE_PCSC
+noinst_PROGRAMS = osmo-sim-test
 osmo_sim_test_SOURCES = osmo-sim-test.c
-osmo_sim_test_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/src/gsm/libosmogsm.la $(top_builddir)/src/sim/libosmosim.la -lpcsclite
-osmo_sim_test_CFLAGS = -I/usr/include/PCSC
+osmo_sim_test_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/src/gsm/libosmogsm.la $(top_builddir)/src/sim/libosmosim.la $(PCSC_LIBS)
+osmo_sim_test_CFLAGS = $(PCSC_CFLAGS)
+endif
 endif