Pull xtensa updates from Max Filippov:

 - add support for FDPIC and static PIE executable formats for noMMU

* tag 'xtensa-20221010' of https://github.com/jcmvbkbc/linux-xtensa:
  xtensa: add FDPIC and static PIE support for noMMU
  xtensa: clean up ELF_PLAT_INIT macro