com32: Fixing lua's dependencies

Lua shall be one of the latest module to build as it requires some other
components to be built before.

Prior this patch, it was impossible to make a parallel build when "j"
was greater than 26.

This patch fix the ordering and allow a "make -j"  of com32 directory.
diff --git a/com32/Makefile b/com32/Makefile
index 6cb4a7d..754c915 100644
--- a/com32/Makefile
+++ b/com32/Makefile
@@ -11,7 +11,7 @@
 all tidy dist clean spotless install: subdirs
 # Parallel dependencies
-chain lua/src mboot menu: lib libutil gpllib
+chain mboot menu: lib libutil gpllib
 cmenu: lib libutil
 elflink/ldlinux: lib
 gfxboot: lib libutil gpllib
@@ -20,3 +20,4 @@
 rosh: lib libutil
 samples: libutil elflink/ldlinux
 sysdump: lib libutil libupload gpllib
+lua/src: cmenu modules