- don't try to be smarter than the upstream - no Werror for kernel modules, rel 2

- don't try to be smarter than the upstream - no Werror for kernel modules, rel 2

-Werror breaks build with 4.9

./include/linux/mmzone.h: In function ‘__nr_to_section’:
./include/linux/mmzone.h:1132:13: warning: the comparison will always evaluate as ‘true’ for the address of ‘mem_section’ will never be NULL [-Waddress]
 1132 |         if (!mem_section[SECTION_NR_TO_ROOT(nr)])
      |             ^
./include/linux/mmzone.h:1127:27: note: ‘mem_section’ declared here
 1127 | extern struct mem_section mem_section[NR_SECTION_ROOTS][SECTIONS_PER_ROOT];
      |                           ^~~~~~~~~~~