posix: linker: Wrap rodata and rwdata in sections.
posix: linker: Wrap rodata and rwdata in sections.

* zephyr_linker_sources states that RODATA and RWDATA
  included will be wrapped in an outer section, so
  add these sections for the posix arch too.

Signed-off-by: Pete Johanson <4b8373d016f277527198385ba72fda0feb5da015@peterjohanson.com>

nashif/zephyr,galak/zephyr,Vudentz/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,Vudentz/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,nashif/zephyr,galak/zephyr,Vudentz/zephyr,nashif/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,finikorg/zephyr,Vudentz/zephyr,Vudentz/zephyr,galak/zephyr,Vudentz/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr