spl: xea: Provide stub DM driver for imx28 clocks

This code fixes following WARNING:
  DTOC    spl/dts/dt-plat.c
fsl_imx28_clkctrl: WARNING: the driver fsl_imx28_clkctrl was not found in the driver list

As imx28 doesn't yet support common clock framework, this prevents from
DTOC warnings during SPL build.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
1 file changed