freescale: Remove CONFIG_DM from header files

Kconfig options must defined in the defconfig files. Since RSA_SOFTWARE_EXP
relies on CONFIG_DM, unless it is set in kconfig we cannot enable RSA.
Remove the hacks which enable CONFIG_DM in header files and update the
defconfig.

Signed-off-by: Simon Glass <sjg@chromium.org>
48 files changed