pcsc: Fix the include path

The pkg-config file already points into the PCSC directory. This
is needed for FreeBSD where /usr/local/include is not in the
default compiler search path.

On Debian
$ pkg-config --cflags libpcsclite
-pthread -I/usr/include/PCSC

On FreeBSD
$ pkg-config --cflags libpcsclite
-I/usr/local/include/PCSC -D_THREAD_SAFE -pthread
diff --git a/src/sim/reader_pcsc.c b/src/sim/reader_pcsc.c
index 5e67091..c52df31 100644
--- a/src/sim/reader_pcsc.c
+++ b/src/sim/reader_pcsc.c
@@ -29,8 +29,8 @@
 #include <osmocom/core/talloc.h>
 #include <osmocom/sim/sim.h>
 
-#include <PCSC/wintypes.h>
-#include <PCSC/winscard.h>
+#include <wintypes.h>
+#include <winscard.h>
 
 #include "sim_int.h"