forked from Mirrors/opensbi

At present plic_set_priority() ignores the 'source' and the priority register to be programmed is constant. Fix it. Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
At present plic_set_priority() ignores the 'source' and the priority register to be programmed is constant. Fix it. Signed-off-by: Bin Meng <bmeng.cn@gmail.com>