ASACORE-1217: Fixed builds break on darwin and WSL.

 - Moved AJ_IntToString() to aj_net.c so any platform
   (not just freeRTOS) could use the function without
   having duplicate code.

Change-Id: I460539197c9ffc56452ca6bc14ccd53411f3ed76
Signed-off-by: James Prestwood <jprestwo@qce.qualcomm.com>
Merge "ASACORE-1217: Fixed builds break on darwin and WSL." into RB14.12
Merge remote-tracking branch 'origin/RB14.12'

Change-Id: I5e524313b81f21538d234373349f608bb9e4bad9
Signed-off-by: Ry Jones <c_lawren@qce.qualcomm.com>