clk: sunxi-ng: mp: fix parent rate change flag check

stable inclusion
from stable-5.10.17
commit 0c0ddf0dd69200285652a26a6978a8e4d889b488
bugzilla: 48169

--------------------------------

[ Upstream commit 245090ab ]

CLK_SET_RATE_PARENT flag is checked on parent clock instead of current
one. Fix that.

Fixes: 3f790433 ("clk: sunxi-ng: Adjust MP clock parent rate when allowed")
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Tested-by: Andre Heider <a.heider@gmail.com>
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Link: https://lore.kernel.org/r/20210209175900.7092-2-jernej.skrabec@siol.net


Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
Acked-by: Xie XiuQi <xiexiuqi@huawei.com>