Use OSMO_FD_* instead of deprecated BSC_FD_*

New define is available since libosmocore 1.1.0, and we already require
1.3.0, so no need to update dependenices.
Let's change it to avoid people re-using old BSC_FD_* symbols when
copy-pasting somewhere else.

Change-Id: Ida8fd3bd7347163567acde34ad67aefee913b0ea
diff --git a/src/osmo-bts-sysmo/sysmo_l1_fwd.c b/src/osmo-bts-sysmo/sysmo_l1_fwd.c
index 535a7f0..cfb2b95 100644
--- a/src/osmo-bts-sysmo/sysmo_l1_fwd.c
+++ b/src/osmo-bts-sysmo/sysmo_l1_fwd.c
@@ -121,7 +121,7 @@
 
 	ofd->data = fl1h;
 	ofd->priv_nr = q;
-	ofd->when |= BSC_FD_READ;
+	ofd->when |= OSMO_FD_READ;
 
 	rc = osmo_sock_init_ofd(ofd, AF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP,
 				bts_host, fwd_udp_ports[q],
diff --git a/src/osmo-bts-sysmo/sysmo_l1_hw.c b/src/osmo-bts-sysmo/sysmo_l1_hw.c
index 8351d68..a67e875 100644
--- a/src/osmo-bts-sysmo/sysmo_l1_hw.c
+++ b/src/osmo-bts-sysmo/sysmo_l1_hw.c
@@ -163,7 +163,7 @@
 	read_ofd->priv_nr = q;
 	read_ofd->data = hdl;
 	read_ofd->cb = l1if_fd_cb;
-	read_ofd->when = BSC_FD_READ;
+	read_ofd->when = OSMO_FD_READ;
 	rc = osmo_fd_register(read_ofd);
 	if (rc < 0) {
 		close(read_ofd->fd);
@@ -182,7 +182,7 @@
 	write_ofd->fd = rc;
 	write_ofd->priv_nr = q;
 	write_ofd->data = hdl;
-	write_ofd->when = BSC_FD_WRITE;
+	write_ofd->when = OSMO_FD_WRITE;
 	rc = osmo_fd_register(write_ofd);
 	if (rc < 0) {
 		close(write_ofd->fd);