CHROMIUM: ath: Add ATH_DEFER_EEPROM_REGULATORY option

CHROMIUM: ath: Add ATH_DEFER_EEPROM_REGULATORY option

Add option to disable the internal regulatory mask
sourced from EEPROM data.  This does not affect CRDA
regulatory operation, but nevertheless this option
should not be used by default.

Signed-off-by: Paul Stewart <pstew@chromium.org>
BUG=chromium:218911
TEST=Recompile with and without flag, ensure EEPROM
regulatory still works with this change disabled using
world regulatory EEPROM card an "iw reg set" command.

Change-Id: I20de00c7c6ea57124df1da8b052e573920579614
Reviewed-on: https://gerrit.chromium.org/gerrit/49176
Reviewed-by: Christopher Wiley <wiley@chromium.org>
Reviewed-by: mukesh agrawal <quiche@chromium.org>
Commit-Queue: Paul Stewart <pstew@chromium.org>
Tested-by: Paul Stewart <pstew@chromium.org>