zephyr/Makefile: syscall_macros.h generation was moved from CMake to make.
Required for #include <zephyr.h> to work.
@@ -105,3 +105,4 @@ outdir/$(BOARD)/Makefile: $(CONF_FILE)
$(Z_EXPORTS): outdir/$(BOARD)/Makefile
make --no-print-directory -C outdir/$(BOARD) outputexports CMAKE_COMMAND=: >$@
+ make -C outdir/$(BOARD) syscall_macros_h_target
