litecross: add dummy lib32 symlink to lib in build sysroot

at least mips n32 target seems to be breaking due to an expectation of
finding crti.o/crtn.o there during building of target libs.

litecross/Makefile

@@ -77,7 +77,7 @@ FULL_MUSL_CONFIG += CC="$(XGCC)" LIBCC="../obj_toolchain/$(TARGET)/libgcc/libgcc
 MUSL_VARS = AR=../obj_toolchain/binutils/ar RANLIB=../obj_toolchain/binutils/ranlib
 obj_musl/.lc_configured: | obj_toolchain/gcc/.lc_built
 obj_musl/.lc_built: | obj_toolchain/$(TARGET)/libgcc/libgcc.a
-obj_toolchain/gcc/.lc_built: | obj_sysroot/usr obj_sysroot/lib64 obj_sysroot/include
+obj_toolchain/gcc/.lc_built: | obj_sysroot/usr obj_sysroot/lib32 obj_sysroot/lib64 obj_sysroot/include
 obj_toolchain/.lc_built: | obj_sysroot/.lc_libs obj_sysroot/.lc_headers
 else
 SYSROOT = /
@@ -158,6 +158,9 @@ obj_sysroot/include:
 obj_sysroot/usr: | obj_sysroot
 	ln -sf . $@
 
+obj_sysroot/lib32: | obj_sysroot
+	ln -sf lib $@
+
 obj_sysroot/lib64: | obj_sysroot
 	ln -sf lib $@