db_text(k) makefile: fix make use

This fixes a bug.  It called make directly which breaks on
platforms where it is being compiled under gmake.

Signed-off-by: Andrei Pelinescu-Onciul <[email protected]>
(cherry picked from commit 5d8552087be74332c1a7812ffb01d8298060cc62)

modules_k/db_text/Makefile

@@ -24,7 +24,7 @@ ifeq ($(INSTALL_FLAVOUR),kamailio)
 # extra install for kamailio
 
 install-dbtext-scripts: $(bin_prefix)/$(bin_dir)
-		DBTEXTON=yes make -C ../../utils/kamctl/ install-modules
+		DBTEXTON=yes $(MAKE) -C ../../utils/kamctl/ install-modules
 
 install-scripts: install-dbtext-scripts