Added the implementation for CDROM_GetIdeInterface on NetBSD.

diff --git a/configure.ac b/configure.ac
index 80f7438..43b1fa6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1007,6 +1007,7 @@
 	sys/poll.h \
 	sys/ptrace.h \
 	sys/reg.h \
+	sys/scsiio.h \
 	sys/shm.h \
 	sys/signal.h \
 	sys/socket.h \