clk: imx7d: using api with flag CLK_OPS_PARENT_ENABLE

i.MX7D requires all clocks operations including enable/disable,
rate change and re-parent with its parent clock on.
Changing to the correct APIs to tell clk core such requirement.

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>