crosstool-ng: Change do_split customization to use postfuncs
crosstool-ng: Change do_split customization to use postfuncs

hundeboll/core,sknsean/core,sknsean/core,hundeboll/core,hundeboll/core,diorcety/oe-lite-core,sknsean/core,sknsean/core,sknsean/core,hundeboll/core,diorcety/oe-lite-core