m68knommu: Add qspi clk for Coldfire SoCs without real clks.

Since we now have fake clks on devices without real clocks, we need clks
defined for qspi for the qspi driver to work on those devices.

Signed-off-by: Steven King <sfking@fdwdc.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>