ljsyscall: move installation path to /usr/share/lua/5x

Move ljsyscall install destination to /usr/share/lua/$(abiver}, to
match what the luarocks install would naturally do.  This also
reflects the value of INSTALL_LMOD in the luajit.pc file.

Signed-off-by: Danomi Manchego <danomimanchego123@gmail.com>
Tested-by: Francois Perrad <francois.perrad@gadz.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/ljsyscall/ljsyscall.mk

@@ -19,7 +19,7 @@ else ifeq ($(LJSYSCALL_ARCH),)
 LJSYSCALL_ARCH = $(BR2_ARCH)
 endif
 
-LJSYSCALL_TARGET_DIR = $(TARGET_DIR)/usr/share/luajit-$(LUAJIT_VERSION)
+LJSYSCALL_TARGET_DIR = $(TARGET_DIR)/usr/share/lua/$(LUAINTERPRETER_ABIVER)
 
 define LJSYSCALL_INSTALL_TARGET_CMDS
 	$(INSTALL) -d $(LJSYSCALL_TARGET_DIR)/syscall