libosmo-abis: Revert parts of the multi-TRX support in libosmo-abis

The line doesn't have the signalling type set yet. It will be set
_after_ the rsl connection is considered up. This is addressing
RSL Connection failures like:

<0001> oml.c:1026 Rx IPA RSL CONNECT IP=1.2.3.4 PORT=3003 STREAM=0x00
<000f> input/ipaccess.c:921 cannot create RSL BTS link: trx_nr (0) does not refer to a signalling link
<0001> oml.c:1030 Error in abis_open(RSL): -22
<0001> oml.c:341 Sending FOM NACK with cause Message cannot be performed.
diff --git a/recipes-osmocom/libosmo-abis/libosmo-abis_git.bb b/recipes-osmocom/libosmo-abis/libosmo-abis_git.bb
index 52c7c98..fd8e8fd 100644
--- a/recipes-osmocom/libosmo-abis/libosmo-abis_git.bb
+++ b/recipes-osmocom/libosmo-abis/libosmo-abis_git.bb
@@ -2,6 +2,7 @@
 
 S = "${WORKDIR}/git"
 SRCREV = "d9d1b5c19f40515cb7c660acda7265bbddbb73d6"
-SRC_URI = "git://git.osmocom.org/libosmo-abis.git;protocol=git"
+SRC_URI = "git://git.osmocom.org/libosmo-abis.git;protocol=git \
+           file://fix-rsl-connect.patch "
 PV = "0.3.0+gitr${SRCPV}"
-PR = "${INC_PR}.0"
+PR = "${INC_PR}.1"