rename openbsc.pc to osmo-bsc.pc

Change-Id: I99ab9fea01c11841437b587dffd4e1fff17a291f
diff --git a/configure.ac b/configure.ac
index 5d684ef..8107047 100644
--- a/configure.ac
+++ b/configure.ac
@@ -125,7 +125,7 @@
 AM_CONFIG_HEADER(bscconfig.h)
 
 AC_OUTPUT(
-    openbsc.pc
+    osmo-bsc.pc
     include/openbsc/Makefile
     include/Makefile
     src/Makefile