Flush and disable L2 cache in dcache_disable()
which will be called in cleanup_before_linux()
before jump to linux.
The sequence will be preferred as below:
L1 flush -> L1 disable -> L2 flush -> L2 disable
Signed-off-by: Rick Chen <rick@andestech.com>
Cc: KC Lin <kclin@andestech.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>