Some of i.MX SoCs' clock driver will use platform driver model,
and they need to call imx_obtain_fixed_clk_hw() API, so
imx_obtain_fixed_clk_hw() API should NOT be in .init section.
Signed-off-by: NPeng Fan <peng.fan@nxp.com>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>