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* MultiROM support for no kexec-hardboot enabled kernels.
  It has been tested on the HTC One M7, M8 and M9 successfully.

* This commit is the multirom portion, which adds the real code
  for the workaround. Needs to be enabled in multirom.ini settings:
  (1) allow_nkk71_nokexec=1 (refer to multirom.h for various values)
  or
  (2) preferably to do it in TWRP https://github.com/nkk71/android_bootable_recovery/commit/21ff5ee42ad1a6b94c2f8ae31409382eb0f6bc47

* This is an updated and more reliable version of the initial
  WIP https://github.com/nkk71/multirom/commit/6ae88fe6590d99844e87b31286db19f133ea70e8

Note:
* The following build flag needs to be added in BoardConfig:
  MR_ALLOW_NKK71_NOKEXEC_WORKAROUND := true