CPU device: limit reported local memory size to 1/2 of CPU's LLC
CPU device: limit reported local memory size to 1/2 of CPU's LLC

It doesn't make sense to report local memory size
larger than CPU's last level cache.

franz/pocl,pocl/pocl,Oblomov/pocl,Oblomov/pocl,pocl/pocl,pocl/pocl,Oblomov/pocl,pocl/pocl,Oblomov/pocl,pocl/pocl,franz/pocl,franz/pocl,franz/pocl,franz/pocl,Oblomov/pocl