Added the changes made to spinel.c
Added the changes made to spinel.c

aeliot/wpantund,abtink/wpantund,aeliot/wpantund,aeliot/wpantund,abtink/wpantund,openthread/wpantund,abtink/wpantund,openthread/wpantund,aeliot/wpantund,abtink/wpantund,openthread/wpantund,openthread/wpantund