git clones: protocol=git -> protocol=https

Also fix dead URLs pointing to git.misdn.eu and git.linphone.org.

Related: SYS#6022
Change-Id: I482f2eea21dce569b1d30e2e7be2e606cf969e0e
diff --git a/recipes-osmocom/osmo-ggsn/osmo-ggsn_git.bb b/recipes-osmocom/osmo-ggsn/osmo-ggsn_git.bb
index ddfb9e3..7394277 100644
--- a/recipes-osmocom/osmo-ggsn/osmo-ggsn_git.bb
+++ b/recipes-osmocom/osmo-ggsn/osmo-ggsn_git.bb
@@ -2,7 +2,7 @@
 
 S = "${WORKDIR}/git"
 SRCREV = "1.9.0"
-SRC_URI = "git://git.osmocom.org/osmo-ggsn;protocol=git;tag=${SRCREV};nobranch=1 \
+SRC_URI = "git://git.osmocom.org/osmo-ggsn;protocol=https;tag=${SRCREV};nobranch=1 \
            file://0001-libgtp-set-PDP_MAX-to-128.patch	    \
           "
 PV = "1.9.0+gitr${SRCPV}"