configure.ac: bump API to 0.2.12, last commit need this
configure.ac: bump API to 0.2.12, last commit need this

YuJiankang/libyami,seanvk/libyami,yizhouwei/libyami,01org/libyami,zhaobob/libyami,seanvk/libyami,01org/libyami,uartie/libyami,dspmeng/libyami,seanvk/libyami,uartie/libyami,dspmeng/libyami,stripes416/libyami,uartie/libyami,stripes416/libyami,lizhong1008/libyami,lizhong1008/libyami,YuJiankang/libyami,YuJiankang/libyami,yizhouwei/libyami,yizhouwei/libyami,lizhong1008/libyami,stripes416/libyami,zhaobob/libyami,zhaobob/libyami,01org/libyami,dspmeng/libyami