bts_is_online(): make the BTS pointer const, return bool

Change-Id: Idb4f9f8862041c5902df0e6e8d1ac2a60ada95df
---
M src/osmo-bsc/bts.c
1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/osmo-bsc/bts.c b/src/osmo-bsc/bts.c
index 108c355..527220f 100644
--- a/src/osmo-bsc/bts.c
+++ b/src/osmo-bsc/bts.c
@@ -888,14 +888,14 @@
 	return (base->depends_on[idx] & (1U << bit)) > 0;
 }
 
-static int bts_is_online(struct gsm_bts *bts)
+static bool bts_is_online(const struct gsm_bts *bts)
 {
 	/* TODO: support E1 BTS too */
 	if (!is_ipaccess_bts(bts))
-		return 1;
+		return true;
 
 	if (!bts->oml_link)
-		return 0;
+		return false;
 
 	return bts->mo.nm_state.operational == NM_OPSTATE_ENABLED;
 }

