i.MX clocks changes for 6.19

- Add delay to the PCC enable/disable in i.MX7ULP composite, needed by
  some specific peripherals.
- Simplify the i.MX8MP auxiomix by using devm_auxiliary_device_create()
- Add the i.MX8ULP SIM LPAV platform specific clock provider.

clk: imx: add driver for imx8ulp's sim lpav

The i.MX8ULP System Integration Module (SIM) LPAV module is a block
control module found inside the LPAV subsystem, which offers some clock
gating options and reset line assertion/de-assertion capabilities.

Therefore, the clock gate management is supported by registering the
module's driver as a clock provider, while the reset capabilities are
managed via the auxiliary device API to allow the DT node to act as a
reset and clock provider.

Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Link: https://lore.kernel.org/r/20251104120301.913-4-laurentiumihalcea111@gmail.com
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>