scripts: move user_wordsize.py to scripts/build/user_wordsize.py

Move scripts needed by the build system and not designed to be run
individually or standalone into the build subfolder.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

CODEOWNERS

@@ -721,7 +721,7 @@ scripts/build/gen_image_info.py           @tejlmand
 /scripts/west-commands.yml                @mbolivar-nordic
 /scripts/zephyr_module.py                 @tejlmand
 /scripts/build/uf2conv.py                 @petejohanson
-/scripts/user_wordsize.py                 @cfriedt
+/scripts/build/user_wordsize.py           @cfriedt
 /scripts/valgrind.supp                    @aescolar @daor-oti
 /share/zephyr-package/                    @tejlmand
 /share/zephyrunittest-package/            @tejlmand

arch/posix/Linux.aarch64.cmake

@@ -8,7 +8,7 @@
 execute_process(
   COMMAND
   ${PYTHON_EXECUTABLE}
-  ${ZEPHYR_BASE}/scripts/user_wordsize.py
+  ${ZEPHYR_BASE}/scripts/build/user_wordsize.py
   OUTPUT_VARIABLE
   WORDSIZE
   OUTPUT_STRIP_TRAILING_WHITESPACE