Various e500 core have different cache architecture, so they
need different cache flush operations. Therefore, add a callback
function cpu_flush_caches to the struct cpu_spec. The cache flush
operation for the specific kind of e500 is selected at init time.
The callback function will flush all caches inside the current cpu.
Signed-off-by: NChenhui Zhao <chenhui.zhao@freescale.com>
Signed-off-by: NTang Yuantian <Yuantian.Tang@feescale.com>
Signed-off-by: NScott Wood <oss@buserror.net>