build: bump required libosmocore, libosmogsm to 0.9.4, for GSUP

GSUP was added to libosmocore in 0.9.4. We're using it here, so make up for a
previously missing bump.

(BTW: I'm pretty sure that other dependencies are also in dire need of a bump,
but leaving that for another patch)

Change-Id: I4f245a7d78d0889b37084c52478372bddb8289d6
diff --git a/openbsc/configure.ac b/openbsc/configure.ac
index 093d42f..123048f 100644
--- a/openbsc/configure.ac
+++ b/openbsc/configure.ac
@@ -30,10 +30,10 @@
 AC_SUBST(LIBRARY_DL)
 
 
-PKG_CHECK_MODULES(LIBOSMOCORE, libosmocore >= 0.6.4)
+PKG_CHECK_MODULES(LIBOSMOCORE, libosmocore >= 0.9.4)
 PKG_CHECK_MODULES(LIBOSMOVTY, libosmovty >= 0.3.0)
 PKG_CHECK_MODULES(LIBOSMOCTRL, libosmoctrl)
-PKG_CHECK_MODULES(LIBOSMOGSM, libosmogsm >= 0.7.0)
+PKG_CHECK_MODULES(LIBOSMOGSM, libosmogsm >= 0.9.4)
 PKG_CHECK_MODULES(LIBOSMOABIS, libosmoabis >= 0.2.0)
 PKG_CHECK_MODULES(LIBOSMOGB, libosmogb >= 0.6.4)
 PKG_CHECK_MODULES(LIBOSMONETIF, libosmo-netif >= 0.0.1)