tools:regression:mkallbranches: Build master branch
tools:regression:mkallbranches: Build master branch

Instead of building the current branch, always use the master branch.

Signed-off-by: Ola Jeppsson <793f970c52ded1276b9264c742f19d1888cbaf73@adapteva.com>

parallella/pal,mateunho/pal,parallella/pal,Adamszk/pal3,olajep/pal,eliteraspberries/pal,debug-de-su-ka/pal,eliteraspberries/pal,8l/pal,8l/pal,eliteraspberries/pal,aolofsson/pal,parallella/pal,debug-de-su-ka/pal,eliteraspberries/pal,debug-de-su-ka/pal,mateunho/pal,olajep/pal,Adamszk/pal3,debug-de-su-ka/pal,8l/pal,parallella/pal,mateunho/pal,olajep/pal,aolofsson/pal,8l/pal,olajep/pal,mateunho/pal,Adamszk/pal3,debug-de-su-ka/pal,mateunho/pal,Adamszk/pal3,aolofsson/pal,eliteraspberries/pal,parallella/pal,aolofsson/pal